Class: Redis
- Inherits:
-
Object
- Object
- Redis
- Includes:
- MonitorMixin
- Defined in:
- lib/redis.rb,
lib/redis/client.rb,
lib/redis/errors.rb,
lib/redis/cluster.rb,
lib/redis/version.rb,
lib/redis/pipeline.rb,
lib/redis/hash_ring.rb,
lib/redis/subscribe.rb,
lib/redis/distributed.rb,
lib/redis/cluster/node.rb,
lib/redis/cluster/slot.rb,
lib/redis/cluster/option.rb,
lib/redis/cluster/command.rb,
lib/redis/connection/ruby.rb,
lib/redis/cluster/node_key.rb,
lib/redis/connection/hiredis.rb,
lib/redis/cluster/node_loader.rb,
lib/redis/cluster/slot_loader.rb,
lib/redis/connection/registry.rb,
lib/redis/connection/synchrony.rb,
lib/redis/cluster/command_loader.rb,
lib/redis/connection/command_helper.rb,
lib/redis/cluster/key_slot_converter.rb
Defined Under Namespace
Modules: Connection Classes: BaseConnectionError, BaseError, CannotConnectError, Client, Cluster, CommandError, ConnectionError, Distributed, Future, FutureNotReady, HashRing, InheritedError, InvalidClientOptionError, Pipeline, ProtocolError, SubscribedClient, Subscription, TimeoutError
Constant Summary collapse
- VERSION =
'4.2.4'
Class Attribute Summary collapse
- .current ⇒ Object
-
.exists_returns_integer ⇒ Object
Returns the value of attribute exists_returns_integer.
Instance Method Summary collapse
- #_bpop(cmd, args, &blk) ⇒ Object
- #_client ⇒ Object
- #_eval(cmd, args) ⇒ Object
- #_exists(*keys) ⇒ Object
- #_scan(command, cursor, args, match: nil, count: nil, &block) ⇒ Object
-
#append(key, value) ⇒ Integer
Append a value to a key.
-
#asking ⇒ String
Sends ‘ASKING` command to random node and returns its reply.
-
#auth(password) ⇒ String
Authenticate to the server.
-
#bgrewriteaof ⇒ String
Asynchronously rewrite the append-only file.
-
#bgsave ⇒ String
Asynchronously save the dataset to disk.
-
#bitcount(key, start = 0, stop = -1)) ⇒ Integer
Count the number of set bits in a range of the string value stored at key.
-
#bitop(operation, destkey, *keys) ⇒ Integer
Perform a bitwise operation between strings and store the resulting string in a key.
-
#bitpos(key, bit, start = nil, stop = nil) ⇒ Integer
Return the position of the first bit set to 1 or 0 in a string.
-
#blpop(*args) ⇒ nil, [String, String]
Remove and get the first element in a list, or block until one is available.
-
#brpop(*args) ⇒ nil, [String, String]
Remove and get the last element in a list, or block until one is available.
-
#brpoplpush(source, destination, deprecated_timeout = 0, timeout: deprecated_timeout) ⇒ nil, String
Pop a value from a list, push it to another list and return it; or block until one is available.
-
#bzpopmax(*args) ⇒ Array<String, String, Float>?
Removes and returns up to count members with the highest scores in the sorted set stored at keys, or block until one is available.
-
#bzpopmin(*args) ⇒ Array<String, String, Float>?
Removes and returns up to count members with the lowest scores in the sorted set stored at keys, or block until one is available.
-
#call(*command) ⇒ Object
Sends a command to Redis and returns its reply.
-
#client(subcommand = nil, *args) ⇒ String, Hash
Manage client connections.
-
#close ⇒ Object
(also: #disconnect!)
Disconnect the client as quickly and silently as possible.
-
#cluster(subcommand, *args) ⇒ Object
Sends ‘CLUSTER *` command to random node and returns its reply.
-
#commit ⇒ Object
Sends all commands in the queue.
-
#config(action, *args) ⇒ String, Hash
Get or set server configuration parameters.
-
#connected? ⇒ Boolean
Test whether or not the client is connected.
- #connection ⇒ Object
-
#dbsize ⇒ Integer
Return the number of keys in the selected database.
- #debug(*args) ⇒ Object
-
#decr(key) ⇒ Integer
Decrement the integer value of a key by one.
-
#decrby(key, decrement) ⇒ Integer
Decrement the integer value of a key by the given number.
-
#del(*keys) ⇒ Integer
Delete one or more keys.
-
#discard ⇒ String
Discard all commands issued after MULTI.
-
#dump(key) ⇒ String
Return a serialized version of the value stored at a key.
- #dup ⇒ Object
-
#echo(value) ⇒ String
Echo the given string.
-
#eval(*args) ⇒ Object
Evaluate Lua script.
-
#evalsha(*args) ⇒ Object
Evaluate Lua script by its SHA.
-
#exec ⇒ nil, Array<...>
Execute all commands issued after MULTI.
-
#exists(*keys) ⇒ Integer
Determine how many of the keys exists.
-
#exists?(*keys) ⇒ Boolean
Determine if any of the keys exists.
-
#expire(key, seconds) ⇒ Boolean
Set a key’s time to live in seconds.
-
#expireat(key, unix_time) ⇒ Boolean
Set the expiration for a key as a UNIX timestamp.
-
#flushall(options = nil) ⇒ String
Remove all keys from all databases.
-
#flushdb(options = nil) ⇒ String
Remove all keys from the current database.
-
#geoadd(key, *member) ⇒ Integer
Adds the specified geospatial items (latitude, longitude, name) to the specified key.
-
#geodist(key, member1, member2, unit = 'm') ⇒ String?
Returns the distance between two members of a geospatial index.
-
#geohash(key, member) ⇒ Array<String, nil>
Returns geohash string representing position for specified members of the specified key.
-
#geopos(key, member) ⇒ Array<Array<String>, nil>
Returns longitude and latitude of members of a geospatial index.
-
#georadius(*args, **geoptions) ⇒ Array<String>
Query a sorted set representing a geospatial index to fetch members matching a given maximum distance from a point.
-
#georadiusbymember(*args, **geoptions) ⇒ Array<String>
Query a sorted set representing a geospatial index to fetch members matching a given maximum distance from an already existing member.
-
#get(key) ⇒ String
Get the value of a key.
-
#getbit(key, offset) ⇒ Integer
Returns the bit value at offset in the string value stored at key.
-
#getrange(key, start, stop) ⇒ Integer
Get a substring of the string stored at a key.
-
#getset(key, value) ⇒ String
Set the string value of a key and return its old value.
-
#hdel(key, *fields) ⇒ Integer
Delete one or more hash fields.
-
#hexists(key, field) ⇒ Boolean
Determine if a hash field exists.
-
#hget(key, field) ⇒ String
Get the value of a hash field.
-
#hgetall(key) ⇒ Hash<String, String>
Get all the fields and values in a hash.
-
#hincrby(key, field, increment) ⇒ Integer
Increment the integer value of a hash field by the given integer number.
-
#hincrbyfloat(key, field, increment) ⇒ Float
Increment the numeric value of a hash field by the given float number.
-
#hkeys(key) ⇒ Array<String>
Get all the fields in a hash.
-
#hlen(key) ⇒ Integer
Get the number of fields in a hash.
-
#hmget(key, *fields, &blk) ⇒ Array<String>
Get the values of all the given hash fields.
-
#hmset(key, *attrs) ⇒ String
Set one or more hash values.
-
#hscan(key, cursor, **options) ⇒ String, Array<[String, String]>
Scan a hash.
-
#hscan_each(key, **options, &block) ⇒ Enumerator
Scan a hash.
-
#hset(key, *attrs) ⇒ Integer
Set one or more hash values.
-
#hsetnx(key, field, value) ⇒ Boolean
Set the value of a hash field, only if the field does not exist.
-
#hvals(key) ⇒ Array<String>
Get all the values in a hash.
- #id ⇒ Object
-
#incr(key) ⇒ Integer
Increment the integer value of a key by one.
-
#incrby(key, increment) ⇒ Integer
Increment the integer value of a key by the given integer number.
-
#incrbyfloat(key, increment) ⇒ Float
Increment the numeric value of a key by the given float number.
-
#info(cmd = nil) ⇒ Hash<String, String>
Get information and statistics about the server.
-
#initialize(options = {}) ⇒ Redis
constructor
Create a new client instance.
- #inspect ⇒ Object
-
#keys(pattern = "*") ⇒ Array<String>
Find all keys matching the given pattern.
-
#lastsave ⇒ Integer
Get the UNIX time stamp of the last successful save to disk.
-
#lindex(key, index) ⇒ String
Get an element from a list by its index.
-
#linsert(key, where, pivot, value) ⇒ Integer
Insert an element before or after another element in a list.
-
#llen(key) ⇒ Integer
Get the length of a list.
-
#lpop(key) ⇒ String
Remove and get the first element in a list.
-
#lpush(key, value) ⇒ Integer
Prepend one or more values to a list, creating the list if it doesn’t exist.
-
#lpushx(key, value) ⇒ Integer
Prepend a value to a list, only if the list exists.
-
#lrange(key, start, stop) ⇒ Array<String>
Get a range of elements from a list.
-
#lrem(key, count, value) ⇒ Integer
Remove elements from a list.
-
#lset(key, index, value) ⇒ String
Set the value of an element in a list by its index.
-
#ltrim(key, start, stop) ⇒ String
Trim a list to the specified range.
-
#mapped_hmget(key, *fields) ⇒ Hash
Get the values of all the given hash fields.
-
#mapped_hmset(key, hash) ⇒ String
Set one or more hash values.
-
#mapped_mget(*keys) ⇒ Hash
Get the values of all the given keys.
-
#mapped_mset(hash) ⇒ String
Set one or more values.
-
#mapped_msetnx(hash) ⇒ Boolean
Set one or more values, only if none of the keys exist.
-
#method_missing(command, *args) ⇒ Object
rubocop:disable Style/MissingRespondToMissing.
-
#mget(*keys, &blk) ⇒ Array<String>
Get the values of all the given keys.
-
#migrate(key, options) ⇒ String
Transfer a key from the connected instance to another instance.
-
#monitor {|line| ... } ⇒ Object
Listen for all requests received by the server in real time.
-
#move(key, db) ⇒ Boolean
Move a key to another database.
-
#mset(*args) ⇒ String
Set one or more values.
-
#msetnx(*args) ⇒ Boolean
Set one or more values, only if none of the keys exist.
-
#multi {|multi| ... } ⇒ String, Array<...>
Mark the start of a transaction block.
- #object(*args) ⇒ Object
-
#persist(key) ⇒ Boolean
Remove the expiration from a key.
-
#pexpire(key, milliseconds) ⇒ Boolean
Set a key’s time to live in milliseconds.
-
#pexpireat(key, ms_unix_time) ⇒ Boolean
Set the expiration for a key as number of milliseconds from UNIX Epoch.
-
#pfadd(key, member) ⇒ Boolean
Add one or more members to a HyperLogLog structure.
-
#pfcount(*keys) ⇒ Integer
Get the approximate cardinality of members added to HyperLogLog structure.
-
#pfmerge(dest_key, *source_key) ⇒ Boolean
Merge multiple HyperLogLog values into an unique value that will approximate the cardinality of the union of the observed Sets of the source HyperLogLog structures.
-
#ping(message = nil) ⇒ String
Ping the server.
- #pipelined ⇒ Object
-
#psetex(key, ttl, value) ⇒ String
Set the time to live in milliseconds of a key.
-
#psubscribe(*channels, &block) ⇒ Object
Listen for messages published to channels matching the given patterns.
-
#psubscribe_with_timeout(timeout, *channels, &block) ⇒ Object
Listen for messages published to channels matching the given patterns.
-
#pttl(key) ⇒ Integer
Get the time to live (in milliseconds) for a key.
-
#publish(channel, message) ⇒ Object
Post a message to a channel.
-
#pubsub(subcommand, *args) ⇒ Object
Inspect the state of the Pub/Sub subsystem.
-
#punsubscribe(*channels) ⇒ Object
Stop listening for messages posted to channels matching the given patterns.
-
#queue(*command) ⇒ Object
Queues a command for pipelining.
-
#quit ⇒ String
Close the connection.
-
#randomkey ⇒ String
Return a random key from the keyspace.
-
#rename(old_name, new_name) ⇒ String
Rename a key.
-
#renamenx(old_name, new_name) ⇒ Boolean
Rename a key, only if the new key does not exist.
-
#restore(key, ttl, serialized_value, replace: nil) ⇒ String
Create a key using the serialized value, previously obtained using DUMP.
-
#rpop(key) ⇒ String
Remove and get the last element in a list.
-
#rpoplpush(source, destination) ⇒ nil, String
Remove the last element in a list, append it to another list and return it.
-
#rpush(key, value) ⇒ Integer
Append one or more values to a list, creating the list if it doesn’t exist.
-
#rpushx(key, value) ⇒ Integer
Append a value to a list, only if the list exists.
-
#sadd(key, member) ⇒ Boolean, Integer
Add one or more members to a set.
-
#save ⇒ String
Synchronously save the dataset to disk.
-
#scan(cursor, **options) ⇒ String+
Scan the keyspace.
-
#scan_each(**options, &block) ⇒ Enumerator
Scan the keyspace.
-
#scard(key) ⇒ Integer
Get the number of members in a set.
-
#script(subcommand, *args) ⇒ String, ...
Control remote script registry.
-
#sdiff(*keys) ⇒ Array<String>
Subtract multiple sets.
-
#sdiffstore(destination, *keys) ⇒ Integer
Subtract multiple sets and store the resulting set in a key.
-
#select(db) ⇒ String
Change the selected database for the current connection.
-
#sentinel(subcommand, *args) ⇒ Array<String>, ...
Interact with the sentinel command (masters, master, slaves, failover).
-
#set(key, value, ex: nil, px: nil, nx: nil, xx: nil, keepttl: nil) ⇒ String, Boolean
Set the string value of a key.
-
#setbit(key, offset, value) ⇒ Integer
Sets or clears the bit at offset in the string value stored at key.
-
#setex(key, ttl, value) ⇒ String
Set the time to live in seconds of a key.
-
#setnx(key, value) ⇒ Boolean
Set the value of a key, only if the key does not exist.
-
#setrange(key, offset, value) ⇒ Integer
Overwrite part of a string at key starting at the specified offset.
-
#shutdown ⇒ Object
Synchronously save the dataset to disk and then shut down the server.
-
#sinter(*keys) ⇒ Array<String>
Intersect multiple sets.
-
#sinterstore(destination, *keys) ⇒ Integer
Intersect multiple sets and store the resulting set in a key.
-
#sismember(key, member) ⇒ Boolean
Determine if a given value is a member of a set.
-
#slaveof(host, port) ⇒ Object
Make the server a slave of another instance, or promote it as master.
-
#slowlog(subcommand, length = nil) ⇒ Array<String>, ...
Interact with the slowlog (get, len, reset).
-
#smembers(key) ⇒ Array<String>
Get all the members in a set.
-
#smove(source, destination, member) ⇒ Boolean
Move a member from one set to another.
-
#sort(key, by: nil, limit: nil, get: nil, order: nil, store: nil) ⇒ Array<String>, ...
Sort the elements in a list, set or sorted set.
-
#spop(key, count = nil) ⇒ String
Remove and return one or more random member from a set.
-
#srandmember(key, count = nil) ⇒ String
Get one or more random members from a set.
-
#srem(key, member) ⇒ Boolean, Integer
Remove one or more members from a set.
-
#sscan(key, cursor, **options) ⇒ String+
Scan a set.
-
#sscan_each(key, **options, &block) ⇒ Enumerator
Scan a set.
-
#strlen(key) ⇒ Integer
Get the length of the value stored in a key.
-
#subscribe(*channels, &block) ⇒ Object
Listen for messages published to the given channels.
-
#subscribe_with_timeout(timeout, *channels, &block) ⇒ Object
Listen for messages published to the given channels.
- #subscribed? ⇒ Boolean
-
#sunion(*keys) ⇒ Array<String>
Add multiple sets.
-
#sunionstore(destination, *keys) ⇒ Integer
Add multiple sets and store the resulting set in a key.
-
#sync ⇒ Object
Internal command used for replication.
- #synchronize ⇒ Object
-
#time ⇒ Array<Integer>
Return the server time.
-
#ttl(key) ⇒ Integer
Get the time to live (in seconds) for a key.
-
#type(key) ⇒ String
Determine the type stored at key.
-
#unlink(*keys) ⇒ Integer
Unlink one or more keys.
-
#unsubscribe(*channels) ⇒ Object
Stop listening for messages posted to the given channels.
-
#unwatch ⇒ String
Forget about all watched keys.
-
#watch(*keys) ⇒ Object, String
Watch the given keys to determine execution of the MULTI/EXEC block.
-
#with_reconnect(val = true, &blk) ⇒ Object
Run code with the client reconnecting.
-
#without_reconnect(&blk) ⇒ Object
Run code without the client reconnecting.
-
#xack(key, group, *ids) ⇒ Integer
Removes one or multiple entries from the pending entries list of a stream consumer group.
-
#xadd(key, entry, approximate: nil, maxlen: nil, id: '*') ⇒ String
Add new entry to the stream.
-
#xclaim(key, group, consumer, min_idle_time, *ids, **opts) ⇒ Hash{String => Hash}, Array<String>
Changes the ownership of a pending entry.
-
#xdel(key, *ids) ⇒ Integer
Delete entries by entry ids.
-
#xgroup(subcommand, key, group, id_or_consumer = nil, mkstream: false) ⇒ String, Integer
Manages the consumer group of the stream.
-
#xinfo(subcommand, key, group = nil) ⇒ Hash+
Returns the stream information each subcommand.
-
#xlen(key) ⇒ Integer
Returns the number of entries inside a stream.
-
#xpending(key, group, *args) ⇒ Hash+
Fetches not acknowledging pending entries.
-
#xrange(key, start = '-', range_end = '+', count: nil) ⇒ Array<Array<String, Hash>>
Fetches entries of the stream in ascending order.
-
#xread(keys, ids, count: nil, block: nil) ⇒ Hash{String => Hash{String => Hash}}
Fetches entries from one or multiple streams.
-
#xreadgroup(group, consumer, keys, ids, count: nil, block: nil, noack: nil) ⇒ Hash{String => Hash{String => Hash}}
Fetches a subset of the entries from one or multiple streams related with the consumer group.
-
#xrevrange(key, range_end = '+', start = '-', count: nil) ⇒ Array<Array<String, Hash>>
Fetches entries of the stream in descending order.
-
#xtrim(key, maxlen, approximate: false) ⇒ Integer
Trims older entries of the stream if needed.
-
#zadd(key, *args, nx: nil, xx: nil, ch: nil, incr: nil) ⇒ Boolean, ...
Add one or more members to a sorted set, or update the score for members that already exist.
-
#zcard(key) ⇒ Integer
Get the number of members in a sorted set.
-
#zcount(key, min, max) ⇒ Integer
Count the members in a sorted set with scores within the given values.
-
#zincrby(key, increment, member) ⇒ Float
Increment the score of a member in a sorted set.
-
#zinterstore(destination, keys, weights: nil, aggregate: nil) ⇒ Integer
Intersect multiple sorted sets and store the resulting sorted set in a new key.
-
#zlexcount(key, min, max) ⇒ Integer
Count the members, with the same score in a sorted set, within the given lexicographical range.
-
#zpopmax(key, count = nil) ⇒ Array<String, Float>+
Removes and returns up to count members with the highest scores in the sorted set stored at key.
-
#zpopmin(key, count = nil) ⇒ Array<String, Float>+
Removes and returns up to count members with the lowest scores in the sorted set stored at key.
-
#zrange(key, start, stop, withscores: false, with_scores: withscores) ⇒ Array<String>, Array<[String, Float]>
Return a range of members in a sorted set, by index.
-
#zrangebylex(key, min, max, limit: nil) ⇒ Array<String>, Array<[String, Float]>
Return a range of members with the same score in a sorted set, by lexicographical ordering.
-
#zrangebyscore(key, min, max, withscores: false, with_scores: withscores, limit: nil) ⇒ Array<String>, Array<[String, Float]>
Return a range of members in a sorted set, by score.
-
#zrank(key, member) ⇒ Integer
Determine the index of a member in a sorted set.
-
#zrem(key, member) ⇒ Boolean, Integer
Remove one or more members from a sorted set.
-
#zremrangebyrank(key, start, stop) ⇒ Integer
Remove all members in a sorted set within the given indexes.
-
#zremrangebyscore(key, min, max) ⇒ Integer
Remove all members in a sorted set within the given scores.
-
#zrevrange(key, start, stop, withscores: false, with_scores: withscores) ⇒ Object
Return a range of members in a sorted set, by index, with scores ordered from high to low.
-
#zrevrangebylex(key, max, min, limit: nil) ⇒ Object
Return a range of members with the same score in a sorted set, by reversed lexicographical ordering.
-
#zrevrangebyscore(key, max, min, withscores: false, with_scores: withscores, limit: nil) ⇒ Object
Return a range of members in a sorted set, by score, with scores ordered from high to low.
-
#zrevrank(key, member) ⇒ Integer
Determine the index of a member in a sorted set, with scores ordered from high to low.
-
#zscan(key, cursor, **options) ⇒ String, Array<[String, Float]>
Scan a sorted set.
-
#zscan_each(key, **options, &block) ⇒ Enumerator
Scan a sorted set.
-
#zscore(key, member) ⇒ Float
Get the score associated with the given member in a sorted set.
-
#zunionstore(destination, keys, weights: nil, aggregate: nil) ⇒ Integer
Add multiple sorted sets and store the resulting sorted set in a new key.
Constructor Details
#initialize(options = {}) ⇒ Redis
Create a new client instance
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# File 'lib/redis.rb', line 58 def initialize( = {}) @options = .dup @cluster_mode = .key?(:cluster) client = @cluster_mode ? Cluster : Client @original_client = @client = client.new() @queue = Hash.new { |h, k| h[k] = [] } super() # Monitor#initialize end |
Dynamic Method Handling
This class handles dynamic methods through the method_missing method
#method_missing(command, *args) ⇒ Object
rubocop:disable Style/MissingRespondToMissing
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# File 'lib/redis.rb', line 3346 def method_missing(command, *args) # rubocop:disable Style/MissingRespondToMissing synchronize do |client| client.call([command] + args) end end |
Class Attribute Details
.current ⇒ Object
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# File 'lib/redis.rb', line 25 def self.current @current ||= Redis.new end |
.exists_returns_integer ⇒ Object
Returns the value of attribute exists_returns_integer.
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# File 'lib/redis.rb', line 8 def exists_returns_integer @exists_returns_integer end |
Instance Method Details
#_bpop(cmd, args, &blk) ⇒ Object
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# File 'lib/redis.rb', line 1204 def _bpop(cmd, args, &blk) timeout = if args.last.is_a?(Hash) = args.pop [:timeout] elsif args.last.respond_to?(:to_int) # Issue deprecation notice in obnoxious mode... args.pop.to_int end timeout ||= 0 if args.size > 1 # Issue deprecation notice in obnoxious mode... end keys = args.flatten synchronize do |client| command = [cmd, keys, timeout] timeout += client.timeout if timeout > 0 client.call_with_timeout(command, timeout, &blk) end end |
#_client ⇒ Object
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# File 'lib/redis.rb', line 140 def _client @client end |
#_eval(cmd, args) ⇒ Object
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# File 'lib/redis.rb', line 2576 def _eval(cmd, args) script = args.shift = args.pop if args.last.is_a?(Hash) ||= {} keys = args.shift || [:keys] || [] argv = args.shift || [:argv] || [] synchronize do |client| client.call([cmd, script, keys.length] + keys + argv) end end |
#_exists(*keys) ⇒ Object
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# File 'lib/redis.rb', line 593 def _exists(*keys) synchronize do |client| client.call([:exists, *keys]) end end |
#_scan(command, cursor, args, match: nil, count: nil, &block) ⇒ Object
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# File 'lib/redis.rb', line 2639 def _scan(command, cursor, args, match: nil, count: nil, &block) # SSCAN/ZSCAN/HSCAN already prepend the key to +args+. args << cursor args << "MATCH" << match if match args << "COUNT" << count if count synchronize do |client| client.call([command] + args, &block) end end |
#append(key, value) ⇒ Integer
Append a value to a key.
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# File 'lib/redis.rb', line 1047 def append(key, value) synchronize do |client| client.call([:append, key, value]) end end |
#asking ⇒ String
Sends ‘ASKING` command to random node and returns its reply.
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# File 'lib/redis.rb', line 3318 def asking synchronize { |client| client.call(%i[asking]) } end |
#auth(password) ⇒ String
Authenticate to the server.
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# File 'lib/redis.rb', line 149 def auth(password) synchronize do |client| client.call([:auth, password]) end end |
#bgrewriteaof ⇒ String
Asynchronously rewrite the append-only file.
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# File 'lib/redis.rb', line 203 def bgrewriteaof synchronize do |client| client.call([:bgrewriteaof]) end end |
#bgsave ⇒ String
Asynchronously save the dataset to disk.
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# File 'lib/redis.rb', line 212 def bgsave synchronize do |client| client.call([:bgsave]) end end |
#bitcount(key, start = 0, stop = -1)) ⇒ Integer
Count the number of set bits in a range of the string value stored at key.
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# File 'lib/redis.rb', line 1059 def bitcount(key, start = 0, stop = -1) synchronize do |client| client.call([:bitcount, key, start, stop]) end end |
#bitop(operation, destkey, *keys) ⇒ Integer
Perform a bitwise operation between strings and store the resulting string in a key.
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# File 'lib/redis.rb', line 1071 def bitop(operation, destkey, *keys) synchronize do |client| client.call([:bitop, operation, destkey, *keys]) end end |
#bitpos(key, bit, start = nil, stop = nil) ⇒ Integer
Return the position of the first bit set to 1 or 0 in a string.
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# File 'lib/redis.rb', line 1085 def bitpos(key, bit, start = nil, stop = nil) raise(ArgumentError, 'stop parameter specified without start parameter') if stop && !start synchronize do |client| command = [:bitpos, key, bit] command << start if start command << stop if stop client.call(command) end end |
#blpop(*args) ⇒ nil, [String, String]
Remove and get the first element in a list, or block until one is available.
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# File 'lib/redis.rb', line 1249 def blpop(*args) _bpop(:blpop, args) end |
#brpop(*args) ⇒ nil, [String, String]
Remove and get the last element in a list, or block until one is available.
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# File 'lib/redis.rb', line 1265 def brpop(*args) _bpop(:brpop, args) end |
#brpoplpush(source, destination, deprecated_timeout = 0, timeout: deprecated_timeout) ⇒ nil, String
Pop a value from a list, push it to another list and return it; or block until one is available.
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# File 'lib/redis.rb', line 1280 def brpoplpush(source, destination, deprecated_timeout = 0, timeout: deprecated_timeout) synchronize do |client| command = [:brpoplpush, source, destination, timeout] timeout += client.timeout if timeout > 0 client.call_with_timeout(command, timeout) end end |
#bzpopmax(*args) ⇒ Array<String, String, Float>?
Removes and returns up to count members with the highest scores in the sorted set stored at keys,
or block until one is available.
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# File 'lib/redis.rb', line 1713 def bzpopmax(*args) _bpop(:bzpopmax, args) do |reply| reply.is_a?(Array) ? [reply[0], reply[1], Floatify.call(reply[2])] : reply end end |
#bzpopmin(*args) ⇒ Array<String, String, Float>?
Removes and returns up to count members with the lowest scores in the sorted set stored at keys,
or block until one is available.
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# File 'lib/redis.rb', line 1734 def bzpopmin(*args) _bpop(:bzpopmin, args) do |reply| reply.is_a?(Array) ? [reply[0], reply[1], Floatify.call(reply[2])] : reply end end |
#call(*command) ⇒ Object
Sends a command to Redis and returns its reply.
Replies are converted to Ruby objects according to the RESP protocol, so you can expect a Ruby array, integer or nil when Redis sends one. Higher level transformations, such as converting an array of pairs into a Ruby hash, are up to consumers.
Redis error replies are raised as Ruby exceptions.
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# File 'lib/redis.rb', line 103 def call(*command) synchronize do |client| client.call(command) end end |
#client(subcommand = nil, *args) ⇒ String, Hash
Manage client connections.
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# File 'lib/redis.rb', line 239 def client(subcommand = nil, *args) synchronize do |client| client.call([:client, subcommand] + args) do |reply| if subcommand.to_s == "list" reply.lines.map do |line| entries = line.chomp.split(/[ =]/) Hash[entries.each_slice(2).to_a] end else reply end end end end |
#close ⇒ Object Also known as: disconnect!
Disconnect the client as quickly and silently as possible.
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# File 'lib/redis.rb', line 90 def close @original_client.disconnect end |
#cluster(subcommand, *args) ⇒ Object
Sends ‘CLUSTER *` command to random node and returns its reply.
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# File 'lib/redis.rb', line 3290 def cluster(subcommand, *args) subcommand = subcommand.to_s.downcase block = case subcommand when 'slots' HashifyClusterSlots when 'nodes' HashifyClusterNodes when 'slaves' HashifyClusterSlaves when 'info' HashifyInfo else Noop end # @see https://github.com/antirez/redis/blob/unstable/src/redis-trib.rb#L127 raw reply expected block = Noop unless @cluster_mode synchronize do |client| client.call([:cluster, subcommand] + args, &block) end end |
#commit ⇒ Object
Sends all commands in the queue.
See redis.io/topics/pipelining for more details.
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# File 'lib/redis.rb', line 125 def commit synchronize do |client| begin pipeline = Pipeline.new(client) @queue[Thread.current.object_id].each do |command| pipeline.call(command) end client.call_pipelined(pipeline) ensure @queue.delete(Thread.current.object_id) end end end |
#config(action, *args) ⇒ String, Hash
Get or set server configuration parameters.
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# File 'lib/redis.rb', line 223 def config(action, *args) synchronize do |client| client.call([:config, action] + args) do |reply| if reply.is_a?(Array) && action == :get Hashify.call(reply) else reply end end end end |
#connected? ⇒ Boolean
Test whether or not the client is connected
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# File 'lib/redis.rb', line 85 def connected? @original_client.connected? end |
#connection ⇒ Object
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# File 'lib/redis.rb', line 3334 def connection return @original_client.connection_info if @cluster_mode { host: @original_client.host, port: @original_client.port, db: @original_client.db, id: @original_client.id, location: @original_client.location } end |
#dbsize ⇒ Integer
Return the number of keys in the selected database.
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# File 'lib/redis.rb', line 257 def dbsize synchronize do |client| client.call([:dbsize]) end end |
#debug(*args) ⇒ Object
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# File 'lib/redis.rb', line 263 def debug(*args) synchronize do |client| client.call([:debug] + args) end end |
#decr(key) ⇒ Integer
Decrement the integer value of a key by one.
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# File 'lib/redis.rb', line 760 def decr(key) synchronize do |client| client.call([:decr, key]) end end |
#decrby(key, decrement) ⇒ Integer
Decrement the integer value of a key by the given number.
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# File 'lib/redis.rb', line 775 def decrby(key, decrement) synchronize do |client| client.call([:decrby, key, decrement]) end end |
#del(*keys) ⇒ Integer
Delete one or more keys.
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# File 'lib/redis.rb', line 555 def del(*keys) synchronize do |client| client.call([:del] + keys) end end |
#discard ⇒ String
Discard all commands issued after MULTI.
Only call this method when ‘#multi` was called without a block.
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# File 'lib/redis.rb', line 2522 def discard synchronize do |client| client.call([:discard]) end end |
#dump(key) ⇒ String
Return a serialized version of the value stored at a key.
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# File 'lib/redis.rb', line 502 def dump(key) synchronize do |client| client.call([:dump, key]) end end |
#dup ⇒ Object
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# File 'lib/redis.rb', line 3330 def dup self.class.new(@options) end |
#echo(value) ⇒ String
Echo the given string.
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# File 'lib/redis.rb', line 180 def echo(value) synchronize do |client| client.call([:echo, value]) end end |
#eval(*args) ⇒ Object
Evaluate Lua script.
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# File 'lib/redis.rb', line 2610 def eval(*args) _eval(:eval, args) end |
#evalsha(*args) ⇒ Object
Evaluate Lua script by its SHA.
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# File 'lib/redis.rb', line 2635 def evalsha(*args) _eval(:evalsha, args) end |
#exec ⇒ nil, Array<...>
Execute all commands issued after MULTI.
Only call this method when ‘#multi` was called without a block.
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# File 'lib/redis.rb', line 2508 def exec synchronize do |client| client.call([:exec]) end end |
#exists(*keys) ⇒ Integer
Determine how many of the keys exists.
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# File 'lib/redis.rb', line 575 def exists(*keys) if !Redis.exists_returns_integer && keys.size == 1 if Redis.exists_returns_integer.nil? = "`Redis#exists(key)` will return an Integer in redis-rb 4.3. `exists?` returns a boolean, you " \ "should use it instead. To opt-in to the new behavior now you can set Redis.exists_returns_integer = " \ "true. To disable this message and keep the current (boolean) behaviour of 'exists' you can set " \ "`Redis.exists_returns_integer = false`, but this option will be removed in 5.0. " \ "(#{::Kernel.caller(1, 1).first})\n" ::Kernel.warn() end exists?(*keys) else _exists(*keys) end end |
#exists?(*keys) ⇒ Boolean
Determine if any of the keys exists.
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# File 'lib/redis.rb', line 603 def exists?(*keys) synchronize do |client| client.call([:exists, *keys]) do |value| value > 0 end end end |
#expire(key, seconds) ⇒ Boolean
Set a key’s time to live in seconds.
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# File 'lib/redis.rb', line 424 def expire(key, seconds) synchronize do |client| client.call([:expire, key, seconds], &Boolify) end end |
#expireat(key, unix_time) ⇒ Boolean
Set the expiration for a key as a UNIX timestamp.
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# File 'lib/redis.rb', line 435 def expireat(key, unix_time) synchronize do |client| client.call([:expireat, key, unix_time], &Boolify) end end |
#flushall(options = nil) ⇒ String
Remove all keys from all databases.
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# File 'lib/redis.rb', line 274 def flushall( = nil) synchronize do |client| if && [:async] client.call(%i[flushall async]) else client.call([:flushall]) end end end |
#flushdb(options = nil) ⇒ String
Remove all keys from the current database.
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# File 'lib/redis.rb', line 289 def flushdb( = nil) synchronize do |client| if && [:async] client.call(%i[flushdb async]) else client.call([:flushdb]) end end end |
#geoadd(key, *member) ⇒ Integer
Adds the specified geospatial items (latitude, longitude, name) to the specified key
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# File 'lib/redis.rb', line 2853 def geoadd(key, *member) synchronize do |client| client.call([:geoadd, key, *member]) end end |
#geodist(key, member1, member2, unit = 'm') ⇒ String?
Returns the distance between two members of a geospatial index
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# File 'lib/redis.rb', line 2924 def geodist(key, member1, member2, unit = 'm') synchronize do |client| client.call([:geodist, key, member1, member2, unit]) end end |
#geohash(key, member) ⇒ Array<String, nil>
Returns geohash string representing position for specified members of the specified key.
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# File 'lib/redis.rb', line 2864 def geohash(key, member) synchronize do |client| client.call([:geohash, key, member]) end end |
#geopos(key, member) ⇒ Array<Array<String>, nil>
Returns longitude and latitude of members of a geospatial index
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# File 'lib/redis.rb', line 2912 def geopos(key, member) synchronize do |client| client.call([:geopos, key, member]) end end |
#georadius(*args, **geoptions) ⇒ Array<String>
Query a sorted set representing a geospatial index to fetch members matching a given maximum distance from a point
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# File 'lib/redis.rb', line 2880 def georadius(*args, **) geoarguments = _geoarguments(*args, **) synchronize do |client| client.call([:georadius, *geoarguments]) end end |
#georadiusbymember(*args, **geoptions) ⇒ Array<String>
Query a sorted set representing a geospatial index to fetch members matching a given maximum distance from an already existing member
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# File 'lib/redis.rb', line 2898 def georadiusbymember(*args, **) geoarguments = _geoarguments(*args, **) synchronize do |client| client.call([:georadiusbymember, *geoarguments]) end end |
#get(key) ⇒ String
Get the value of a key.
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# File 'lib/redis.rb', line 952 def get(key) synchronize do |client| client.call([:get, key]) end end |
#getbit(key, offset) ⇒ Integer
Returns the bit value at offset in the string value stored at key.
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# File 'lib/redis.rb', line 1036 def getbit(key, offset) synchronize do |client| client.call([:getbit, key, offset]) end end |
#getrange(key, start, stop) ⇒ Integer
Get a substring of the string stored at a key.
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# File 'lib/redis.rb', line 1013 def getrange(key, start, stop) synchronize do |client| client.call([:getrange, key, start, stop]) end end |
#getset(key, value) ⇒ String
Set the string value of a key and return its old value.
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# File 'lib/redis.rb', line 1102 def getset(key, value) synchronize do |client| client.call([:getset, key, value.to_s]) end end |
#hdel(key, *fields) ⇒ Integer
Delete one or more hash fields.
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# File 'lib/redis.rb', line 2239 def hdel(key, *fields) synchronize do |client| client.call([:hdel, key, *fields]) end end |
#hexists(key, field) ⇒ Boolean
Determine if a hash field exists.
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# File 'lib/redis.rb', line 2250 def hexists(key, field) synchronize do |client| client.call([:hexists, key, field], &Boolify) end end |
#hget(key, field) ⇒ String
Get the value of a hash field.
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# File 'lib/redis.rb', line 2190 def hget(key, field) synchronize do |client| client.call([:hget, key, field]) end end |
#hgetall(key) ⇒ Hash<String, String>
Get all the fields and values in a hash.
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# File 'lib/redis.rb', line 2304 def hgetall(key) synchronize do |client| client.call([:hgetall, key], &Hashify) end end |
#hincrby(key, field, increment) ⇒ Integer
Increment the integer value of a hash field by the given integer number.
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# File 'lib/redis.rb', line 2262 def hincrby(key, field, increment) synchronize do |client| client.call([:hincrby, key, field, increment]) end end |
#hincrbyfloat(key, field, increment) ⇒ Float
Increment the numeric value of a hash field by the given float number.
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# File 'lib/redis.rb', line 2274 def hincrbyfloat(key, field, increment) synchronize do |client| client.call([:hincrbyfloat, key, field, increment], &Floatify) end end |
#hkeys(key) ⇒ Array<String>
Get all the fields in a hash.
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# File 'lib/redis.rb', line 2284 def hkeys(key) synchronize do |client| client.call([:hkeys, key]) end end |
#hlen(key) ⇒ Integer
Get the number of fields in a hash.
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# File 'lib/redis.rb', line 2118 def hlen(key) synchronize do |client| client.call([:hlen, key]) end end |
#hmget(key, *fields, &blk) ⇒ Array<String>
Get the values of all the given hash fields.
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# File 'lib/redis.rb', line 2207 def hmget(key, *fields, &blk) synchronize do |client| client.call([:hmget, key] + fields, &blk) end end |
#hmset(key, *attrs) ⇒ String
Set one or more hash values.
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# File 'lib/redis.rb', line 2164 def hmset(key, *attrs) synchronize do |client| client.call([:hmset, key] + attrs) end end |
#hscan(key, cursor, **options) ⇒ String, Array<[String, String]>
Scan a hash
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# File 'lib/redis.rb', line 2707 def hscan(key, cursor, **) _scan(:hscan, cursor, [key], **) do |reply| [reply[0], reply[1].each_slice(2).to_a] end end |
#hscan_each(key, **options, &block) ⇒ Enumerator
Scan a hash
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# File 'lib/redis.rb', line 2724 def hscan_each(key, **, &block) return to_enum(:hscan_each, key, **) unless block_given? cursor = 0 loop do cursor, values = hscan(key, cursor, **) values.each(&block) break if cursor == "0" end end |
#hset(key, *attrs) ⇒ Integer
Set one or more hash values.
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# File 'lib/redis.rb', line 2133 def hset(key, *attrs) attrs = attrs.first.flatten if attrs.size == 1 && attrs.first.is_a?(Hash) synchronize do |client| client.call([:hset, key, *attrs]) end end |
#hsetnx(key, field, value) ⇒ Boolean
Set the value of a hash field, only if the field does not exist.
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# File 'lib/redis.rb', line 2147 def hsetnx(key, field, value) synchronize do |client| client.call([:hsetnx, key, field, value], &Boolify) end end |
#hvals(key) ⇒ Array<String>
Get all the values in a hash.
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# File 'lib/redis.rb', line 2294 def hvals(key) synchronize do |client| client.call([:hvals, key]) end end |
#id ⇒ Object
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# File 'lib/redis.rb', line 3322 def id @original_client.id end |
#incr(key) ⇒ Integer
Increment the integer value of a key by one.
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# File 'lib/redis.rb', line 789 def incr(key) synchronize do |client| client.call([:incr, key]) end end |
#incrby(key, increment) ⇒ Integer
Increment the integer value of a key by the given integer number.
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# File 'lib/redis.rb', line 804 def incrby(key, increment) synchronize do |client| client.call([:incrby, key, increment]) end end |
#incrbyfloat(key, increment) ⇒ Float
Increment the numeric value of a key by the given float number.
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# File 'lib/redis.rb', line 819 def incrbyfloat(key, increment) synchronize do |client| client.call([:incrbyfloat, key, increment], &Floatify) end end |
#info(cmd = nil) ⇒ Hash<String, String>
Get information and statistics about the server.
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# File 'lib/redis.rb', line 303 def info(cmd = nil) synchronize do |client| client.call([:info, cmd].compact) do |reply| if reply.is_a?(String) reply = HashifyInfo.call(reply) if cmd && cmd.to_s == "commandstats" # Extract nested hashes for INFO COMMANDSTATS reply = Hash[reply.map do |k, v| v = v.split(",").map { |e| e.split("=") } [k[/^cmdstat_(.*)$/, 1], Hash[v]] end] end end reply end end end |
#inspect ⇒ Object
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# File 'lib/redis.rb', line 3326 def inspect "#<Redis client v#{Redis::VERSION} for #{id}>" end |
#keys(pattern = "*") ⇒ Array<String>
Find all keys matching the given pattern.
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# File 'lib/redis.rb', line 615 def keys(pattern = "*") synchronize do |client| client.call([:keys, pattern]) do |reply| if reply.is_a?(String) reply.split(" ") else reply end end end end |
#lastsave ⇒ Integer
Get the UNIX time stamp of the last successful save to disk.
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# File 'lib/redis.rb', line 326 def lastsave synchronize do |client| client.call([:lastsave]) end end |
#lindex(key, index) ⇒ String
Get an element from a list by its index.
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# File 'lib/redis.rb', line 1293 def lindex(key, index) synchronize do |client| client.call([:lindex, key, index]) end end |
#linsert(key, where, pivot, value) ⇒ Integer
Insert an element before or after another element in a list.
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# File 'lib/redis.rb', line 1307 def linsert(key, where, pivot, value) synchronize do |client| client.call([:linsert, key, where, pivot, value]) end end |
#llen(key) ⇒ Integer
Get the length of a list.
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# File 'lib/redis.rb', line 1123 def llen(key) synchronize do |client| client.call([:llen, key]) end end |
#lpop(key) ⇒ String
Remove and get the first element in a list.
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# File 'lib/redis.rb', line 1177 def lpop(key) synchronize do |client| client.call([:lpop, key]) end end |
#lpush(key, value) ⇒ Integer
Prepend one or more values to a list, creating the list if it doesn’t exist
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# File 'lib/redis.rb', line 1134 def lpush(key, value) synchronize do |client| client.call([:lpush, key, value]) end end |
#lpushx(key, value) ⇒ Integer
Prepend a value to a list, only if the list exists.
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# File 'lib/redis.rb', line 1145 def lpushx(key, value) synchronize do |client| client.call([:lpushx, key, value]) end end |
#lrange(key, start, stop) ⇒ Array<String>
Get a range of elements from a list.
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# File 'lib/redis.rb', line 1319 def lrange(key, start, stop) synchronize do |client| client.call([:lrange, key, start, stop]) end end |
#lrem(key, count, value) ⇒ Integer
Remove elements from a list.
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# File 'lib/redis.rb', line 1334 def lrem(key, count, value) synchronize do |client| client.call([:lrem, key, count, value]) end end |
#lset(key, index, value) ⇒ String
Set the value of an element in a list by its index.
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# File 'lib/redis.rb', line 1346 def lset(key, index, value) synchronize do |client| client.call([:lset, key, index, value]) end end |
#ltrim(key, start, stop) ⇒ String
Trim a list to the specified range.
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# File 'lib/redis.rb', line 1358 def ltrim(key, start, stop) synchronize do |client| client.call([:ltrim, key, start, stop]) end end |
#mapped_hmget(key, *fields) ⇒ Hash
Get the values of all the given hash fields.
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# File 'lib/redis.rb', line 2224 def mapped_hmget(key, *fields) hmget(key, *fields) do |reply| if reply.is_a?(Array) Hash[fields.zip(reply)] else reply end end end |
#mapped_hmset(key, hash) ⇒ String
Set one or more hash values.
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# File 'lib/redis.rb', line 2181 def mapped_hmset(key, hash) hmset(key, hash.to_a.flatten) end |
#mapped_mget(*keys) ⇒ Hash
Get the values of all the given keys.
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# File 'lib/redis.rb', line 984 def mapped_mget(*keys) mget(*keys) do |reply| if reply.is_a?(Array) Hash[keys.zip(reply)] else reply end end end |
#mapped_mset(hash) ⇒ String
Set one or more values.
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# File 'lib/redis.rb', line 914 def mapped_mset(hash) mset(hash.to_a.flatten) end |
#mapped_msetnx(hash) ⇒ Boolean
Set one or more values, only if none of the keys exist.
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# File 'lib/redis.rb', line 944 def mapped_msetnx(hash) msetnx(hash.to_a.flatten) end |
#mget(*keys, &blk) ⇒ Array<String>
Get the values of all the given keys.
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# File 'lib/redis.rb', line 968 def mget(*keys, &blk) synchronize do |client| client.call([:mget, *keys], &blk) end end |
#migrate(key, options) ⇒ String
Transfer a key from the connected instance to another instance.
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# File 'lib/redis.rb', line 537 def migrate(key, ) args = [:migrate] args << ([:host] || raise(':host not specified')) args << ([:port] || raise(':port not specified')) args << (key.is_a?(String) ? key : '') args << ([:db] || @client.db).to_i args << ([:timeout] || @client.timeout).to_i args << 'COPY' if [:copy] args << 'REPLACE' if [:replace] args += ['KEYS', *key] if key.is_a?(Array) synchronize { |client| client.call(args) } end |
#monitor {|line| ... } ⇒ Object
Listen for all requests received by the server in real time.
There is no way to interrupt this command.
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# File 'lib/redis.rb', line 338 def monitor(&block) synchronize do |client| client.call_loop([:monitor], &block) end end |
#move(key, db) ⇒ Boolean
Move a key to another database.
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# File 'lib/redis.rb', line 646 def move(key, db) synchronize do |client| client.call([:move, key, db], &Boolify) end end |
#mset(*args) ⇒ String
Set one or more values.
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# File 'lib/redis.rb', line 898 def mset(*args) synchronize do |client| client.call([:mset] + args) end end |
#msetnx(*args) ⇒ Boolean
Set one or more values, only if none of the keys exist.
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# File 'lib/redis.rb', line 928 def msetnx(*args) synchronize do |client| client.call([:msetnx, *args], &Boolify) end end |
#multi {|multi| ... } ⇒ String, Array<...>
Mark the start of a transaction block.
Passing a block is optional.
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# File 'lib/redis.rb', line 2482 def multi synchronize do |prior_client| if !block_given? prior_client.call([:multi]) else begin @client = Pipeline::Multi.new(prior_client) yield(self) prior_client.call_pipeline(@client) ensure @client = prior_client end end end end |
#object(*args) ⇒ Object
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# File 'lib/redis.rb', line 652 def object(*args) synchronize do |client| client.call([:object] + args) end end |
#persist(key) ⇒ Boolean
Remove the expiration from a key.
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# File 'lib/redis.rb', line 413 def persist(key) synchronize do |client| client.call([:persist, key], &Boolify) end end |
#pexpire(key, milliseconds) ⇒ Boolean
Set a key’s time to live in milliseconds.
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# File 'lib/redis.rb', line 464 def pexpire(key, milliseconds) synchronize do |client| client.call([:pexpire, key, milliseconds], &Boolify) end end |
#pexpireat(key, ms_unix_time) ⇒ Boolean
Set the expiration for a key as number of milliseconds from UNIX Epoch.
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# File 'lib/redis.rb', line 475 def pexpireat(key, ms_unix_time) synchronize do |client| client.call([:pexpireat, key, ms_unix_time], &Boolify) end end |
#pfadd(key, member) ⇒ Boolean
Add one or more members to a HyperLogLog structure.
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# File 'lib/redis.rb', line 2817 def pfadd(key, member) synchronize do |client| client.call([:pfadd, key, member], &Boolify) end end |
#pfcount(*keys) ⇒ Integer
Get the approximate cardinality of members added to HyperLogLog structure.
If called with multiple keys, returns the approximate cardinality of the union of the HyperLogLogs contained in the keys.
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# File 'lib/redis.rb', line 2830 def pfcount(*keys) synchronize do |client| client.call([:pfcount] + keys) end end |
#pfmerge(dest_key, *source_key) ⇒ Boolean
Merge multiple HyperLogLog values into an unique value that will approximate the cardinality of the union of the observed Sets of the source HyperLogLog structures.
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# File 'lib/redis.rb', line 2842 def pfmerge(dest_key, *source_key) synchronize do |client| client.call([:pfmerge, dest_key, *source_key], &BoolifySet) end end |
#ping(message = nil) ⇒ String
Ping the server.
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# File 'lib/redis.rb', line 170 def ping( = nil) synchronize do |client| client.call([:ping, ].compact) end end |
#pipelined ⇒ Object
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# File 'lib/redis.rb', line 2440 def pipelined synchronize do |prior_client| begin @client = Pipeline.new(prior_client) yield(self) prior_client.call_pipeline(@client) ensure @client = prior_client end end end |
#psetex(key, ttl, value) ⇒ String
Set the time to live in milliseconds of a key.
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# File 'lib/redis.rb', line 871 def psetex(key, ttl, value) synchronize do |client| client.call([:psetex, key, ttl, value.to_s]) end end |
#psubscribe(*channels, &block) ⇒ Object
Listen for messages published to channels matching the given patterns.
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# File 'lib/redis.rb', line 2348 def psubscribe(*channels, &block) synchronize do |_client| _subscription(:psubscribe, 0, channels, block) end end |
#psubscribe_with_timeout(timeout, *channels, &block) ⇒ Object
Listen for messages published to channels matching the given patterns. Throw a timeout error if there is no messages for a timeout period.
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# File 'lib/redis.rb', line 2356 def psubscribe_with_timeout(timeout, *channels, &block) synchronize do |_client| _subscription(:psubscribe_with_timeout, timeout, channels, block) end end |
#pttl(key) ⇒ Integer
Get the time to live (in milliseconds) for a key.
In Redis 2.6 or older the command returns -1 if the key does not exist or if the key exist but has no associated expire.
Starting with Redis 2.8 the return value in case of error changed:
- The command returns -2 if the key does not exist.
- The command returns -1 if the key exists but has no associated expire.
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# File 'lib/redis.rb', line 492 def pttl(key) synchronize do |client| client.call([:pttl, key]) end end |
#publish(channel, message) ⇒ Object
Post a message to a channel.
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# File 'lib/redis.rb', line 2311 def publish(channel, ) synchronize do |client| client.call([:publish, channel, ]) end end |
#pubsub(subcommand, *args) ⇒ Object
Inspect the state of the Pub/Sub subsystem. Possible subcommands: channels, numsub, numpat.
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# File 'lib/redis.rb', line 2373 def pubsub(subcommand, *args) synchronize do |client| client.call([:pubsub, subcommand] + args) end end |
#punsubscribe(*channels) ⇒ Object
Stop listening for messages posted to channels matching the given patterns.
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# File 'lib/redis.rb', line 2363 def punsubscribe(*channels) synchronize do |client| raise "Can't unsubscribe if not subscribed." unless subscribed? client.punsubscribe(*channels) end end |
#queue(*command) ⇒ Object
Queues a command for pipelining.
Commands in the queue are executed with the Redis#commit method.
See redis.io/topics/pipelining for more details.
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# File 'lib/redis.rb', line 115 def queue(*command) synchronize do @queue[Thread.current.object_id] << command end end |
#quit ⇒ String
Close the connection.
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# File 'lib/redis.rb', line 189 def quit synchronize do |client| begin client.call([:quit]) rescue ConnectionError ensure client.disconnect end end end |
#randomkey ⇒ String
Return a random key from the keyspace.
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# File 'lib/redis.rb', line 661 def randomkey synchronize do |client| client.call([:randomkey]) end end |
#rename(old_name, new_name) ⇒ String
Rename a key. If the new key already exists it is overwritten.
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# File 'lib/redis.rb', line 672 def rename(old_name, new_name) synchronize do |client| client.call([:rename, old_name, new_name]) end end |
#renamenx(old_name, new_name) ⇒ Boolean
Rename a key, only if the new key does not exist.
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# File 'lib/redis.rb', line 683 def renamenx(old_name, new_name) synchronize do |client| client.call([:renamenx, old_name, new_name], &Boolify) end end |
#restore(key, ttl, serialized_value, replace: nil) ⇒ String
Create a key using the serialized value, previously obtained using DUMP.
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# File 'lib/redis.rb', line 517 def restore(key, ttl, serialized_value, replace: nil) args = [:restore, key, ttl, serialized_value] args << 'REPLACE' if replace synchronize do |client| client.call(args) end end |
#rpop(key) ⇒ String
Remove and get the last element in a list.
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# File 'lib/redis.rb', line 1187 def rpop(key) synchronize do |client| client.call([:rpop, key]) end end |
#rpoplpush(source, destination) ⇒ nil, String
Remove the last element in a list, append it to another list and return it.
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# File 'lib/redis.rb', line 1198 def rpoplpush(source, destination) synchronize do |client| client.call([:rpoplpush, source, destination]) end end |
#rpush(key, value) ⇒ Integer
Append one or more values to a list, creating the list if it doesn’t exist
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# File 'lib/redis.rb', line 1156 def rpush(key, value) synchronize do |client| client.call([:rpush, key, value]) end end |
#rpushx(key, value) ⇒ Integer
Append a value to a list, only if the list exists.
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# File 'lib/redis.rb', line 1167 def rpushx(key, value) synchronize do |client| client.call([:rpushx, key, value]) end end |
#sadd(key, member) ⇒ Boolean, Integer
Add one or more members to a set.
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# File 'lib/redis.rb', line 1382 def sadd(key, member) synchronize do |client| client.call([:sadd, key, member]) do |reply| if member.is_a? Array # Variadic: return integer reply else # Single argument: return boolean Boolify.call(reply) end end end end |
#save ⇒ String
Synchronously save the dataset to disk.
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# File 'lib/redis.rb', line 347 def save synchronize do |client| client.call([:save]) end end |
#scan(cursor, **options) ⇒ String+
Scan the keyspace
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# File 'lib/redis.rb', line 2666 def scan(cursor, **) _scan(:scan, cursor, [], **) end |
#scan_each(**options, &block) ⇒ Enumerator
Scan the keyspace
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# File 'lib/redis.rb', line 2685 def scan_each(**, &block) return to_enum(:scan_each, **) unless block_given? cursor = 0 loop do cursor, keys = scan(cursor, **) keys.each(&block) break if cursor == "0" end end |
#scard(key) ⇒ Integer
Get the number of members in a set.
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# File 'lib/redis.rb', line 1368 def scard(key) synchronize do |client| client.call([:scard, key]) end end |
#script(subcommand, *args) ⇒ String, ...
Control remote script registry.
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# File 'lib/redis.rb', line 2552 def script(subcommand, *args) subcommand = subcommand.to_s.downcase if subcommand == "exists" synchronize do |client| arg = args.first client.call([:script, :exists, arg]) do |reply| reply = reply.map { |r| Boolify.call(r) } if arg.is_a?(Array) reply else reply.first end end end else synchronize do |client| client.call([:script, subcommand] + args) end end end |
#sdiff(*keys) ⇒ Array<String>
Subtract multiple sets.
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# File 'lib/redis.rb', line 1485 def sdiff(*keys) synchronize do |client| client.call([:sdiff, *keys]) end end |
#sdiffstore(destination, *keys) ⇒ Integer
Subtract multiple sets and store the resulting set in a key.
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# File 'lib/redis.rb', line 1496 def sdiffstore(destination, *keys) synchronize do |client| client.call([:sdiffstore, destination, *keys]) end end |
#select(db) ⇒ String
Change the selected database for the current connection.
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# File 'lib/redis.rb', line 159 def select(db) synchronize do |client| client.db = db client.call([:select, db]) end end |
#sentinel(subcommand, *args) ⇒ Array<String>, ...
Interact with the sentinel command (masters, master, slaves, failover)
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# File 'lib/redis.rb', line 3260 def sentinel(subcommand, *args) subcommand = subcommand.to_s.downcase synchronize do |client| client.call([:sentinel, subcommand] + args) do |reply| case subcommand when "get-master-addr-by-name" reply else if reply.is_a?(Array) if reply[0].is_a?(Array) reply.map(&Hashify) else Hashify.call(reply) end else reply end end end end end |
#set(key, value, ex: nil, px: nil, nx: nil, xx: nil, keepttl: nil) ⇒ String, Boolean
Set the string value of a key.
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# File 'lib/redis.rb', line 836 def set(key, value, ex: nil, px: nil, nx: nil, xx: nil, keepttl: nil) args = [:set, key, value.to_s] args << "EX" << ex if ex args << "PX" << px if px args << "NX" if nx args << "XX" if xx args << "KEEPTTL" if keepttl synchronize do |client| if nx || xx client.call(args, &BoolifySet) else client.call(args) end end end |
#setbit(key, offset, value) ⇒ Integer
Sets or clears the bit at offset in the string value stored at key.
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# File 'lib/redis.rb', line 1025 def setbit(key, offset, value) synchronize do |client| client.call([:setbit, key, offset, value]) end end |
#setex(key, ttl, value) ⇒ String
Set the time to live in seconds of a key.
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# File 'lib/redis.rb', line 859 def setex(key, ttl, value) synchronize do |client| client.call([:setex, key, ttl, value.to_s]) end end |
#setnx(key, value) ⇒ Boolean
Set the value of a key, only if the key does not exist.
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# File 'lib/redis.rb', line 882 def setnx(key, value) synchronize do |client| client.call([:setnx, key, value.to_s], &Boolify) end end |
#setrange(key, offset, value) ⇒ Integer
Overwrite part of a string at key starting at the specified offset.
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# File 'lib/redis.rb', line 1000 def setrange(key, offset, value) synchronize do |client| client.call([:setrange, key, offset, value.to_s]) end end |
#shutdown ⇒ Object
Synchronously save the dataset to disk and then shut down the server.
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# File 'lib/redis.rb', line 354 def shutdown synchronize do |client| client.with_reconnect(false) do begin client.call([:shutdown]) rescue ConnectionError # This means Redis has probably exited. nil end end end end |
#sinter(*keys) ⇒ Array<String>
Intersect multiple sets.
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# File 'lib/redis.rb', line 1506 def sinter(*keys) synchronize do |client| client.call([:sinter, *keys]) end end |
#sinterstore(destination, *keys) ⇒ Integer
Intersect multiple sets and store the resulting set in a key.
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# File 'lib/redis.rb', line 1517 def sinterstore(destination, *keys) synchronize do |client| client.call([:sinterstore, destination, *keys]) end end |
#sismember(key, member) ⇒ Boolean
Determine if a given value is a member of a set.
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# File 'lib/redis.rb', line 1465 def sismember(key, member) synchronize do |client| client.call([:sismember, key, member], &Boolify) end end |
#slaveof(host, port) ⇒ Object
Make the server a slave of another instance, or promote it as master.
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# File 'lib/redis.rb', line 368 def slaveof(host, port) synchronize do |client| client.call([:slaveof, host, port]) end end |
#slowlog(subcommand, length = nil) ⇒ Array<String>, ...
Interact with the slowlog (get, len, reset)
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# File 'lib/redis.rb', line 379 def slowlog(subcommand, length = nil) synchronize do |client| args = [:slowlog, subcommand] args << length if length client.call args end end |
#smembers(key) ⇒ Array<String>
Get all the members in a set.
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# File 'lib/redis.rb', line 1475 def smembers(key) synchronize do |client| client.call([:smembers, key]) end end |
#smove(source, destination, member) ⇒ Boolean
Move a member from one set to another.
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# File 'lib/redis.rb', line 1454 def smove(source, destination, member) synchronize do |client| client.call([:smove, source, destination, member], &Boolify) end end |
#sort(key, by: nil, limit: nil, get: nil, order: nil, store: nil) ⇒ Array<String>, ...
Sort the elements in a list, set or sorted set.
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# File 'lib/redis.rb', line 714 def sort(key, by: nil, limit: nil, get: nil, order: nil, store: nil) args = [:sort, key] args << "BY" << by if by if limit args << "LIMIT" args.concat(limit) end get = Array(get) get.each do |item| args << "GET" << item end args.concat(order.split(" ")) if order args << "STORE" << store if store synchronize do |client| client.call(args) do |reply| if get.size > 1 && !store reply.each_slice(get.size).to_a if reply else reply end end end end |
#spop(key, count = nil) ⇒ String
Remove and return one or more random member from a set.
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# File 'lib/redis.rb', line 1423 def spop(key, count = nil) synchronize do |client| if count.nil? client.call([:spop, key]) else client.call([:spop, key, count]) end end end |
#srandmember(key, count = nil) ⇒ String
Get one or more random members from a set.
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# File 'lib/redis.rb', line 1438 def srandmember(key, count = nil) synchronize do |client| if count.nil? client.call([:srandmember, key]) else client.call([:srandmember, key, count]) end end end |
#srem(key, member) ⇒ Boolean, Integer
Remove one or more members from a set.
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# File 'lib/redis.rb', line 1404 def srem(key, member) synchronize do |client| client.call([:srem, key, member]) do |reply| if member.is_a? Array # Variadic: return integer reply else # Single argument: return boolean Boolify.call(reply) end end end end |
#sscan(key, cursor, **options) ⇒ String+
Scan a set
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# File 'lib/redis.rb', line 2786 def sscan(key, cursor, **) _scan(:sscan, cursor, [key], **) end |
#sscan_each(key, **options, &block) ⇒ Enumerator
Scan a set
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# File 'lib/redis.rb', line 2801 def sscan_each(key, **, &block) return to_enum(:sscan_each, key, **) unless block_given? cursor = 0 loop do cursor, keys = sscan(key, cursor, **) keys.each(&block) break if cursor == "0" end end |
#strlen(key) ⇒ Integer
Get the length of the value stored in a key.
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# File 'lib/redis.rb', line 1113 def strlen(key) synchronize do |client| client.call([:strlen, key]) end end |
#subscribe(*channels, &block) ⇒ Object
Listen for messages published to the given channels.
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# File 'lib/redis.rb', line 2324 def subscribe(*channels, &block) synchronize do |_client| _subscription(:subscribe, 0, channels, block) end end |
#subscribe_with_timeout(timeout, *channels, &block) ⇒ Object
Listen for messages published to the given channels. Throw a timeout error if there is no messages for a timeout period.
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# File 'lib/redis.rb', line 2332 def subscribe_with_timeout(timeout, *channels, &block) synchronize do |_client| _subscription(:subscribe_with_timeout, timeout, channels, block) end end |
#subscribed? ⇒ Boolean
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# File 'lib/redis.rb', line 2317 def subscribed? synchronize do |client| client.is_a? SubscribedClient end end |
#sunion(*keys) ⇒ Array<String>
Add multiple sets.
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# File 'lib/redis.rb', line 1527 def sunion(*keys) synchronize do |client| client.call([:sunion, *keys]) end end |
#sunionstore(destination, *keys) ⇒ Integer
Add multiple sets and store the resulting set in a key.
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# File 'lib/redis.rb', line 1538 def sunionstore(destination, *keys) synchronize do |client| client.call([:sunionstore, destination, *keys]) end end |
#sync ⇒ Object
Internal command used for replication.
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# File 'lib/redis.rb', line 388 def sync synchronize do |client| client.call([:sync]) end end |
#synchronize ⇒ Object
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# File 'lib/redis.rb', line 68 def synchronize mon_synchronize { yield(@client) } end |
#time ⇒ Array<Integer>
Return the server time.
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# File 'lib/redis.rb', line 401 def time synchronize do |client| client.call([:time]) do |reply| reply&.map(&:to_i) end end end |
#ttl(key) ⇒ Integer
Get the time to live (in seconds) for a key.
In Redis 2.6 or older the command returns -1 if the key does not exist or if the key exist but has no associated expire.
Starting with Redis 2.8 the return value in case of error changed:
- The command returns -2 if the key does not exist.
- The command returns -1 if the key exists but has no associated expire.
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# File 'lib/redis.rb', line 453 def ttl(key) synchronize do |client| client.call([:ttl, key]) end end |
#type(key) ⇒ String
Determine the type stored at key.
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# File 'lib/redis.rb', line 746 def type(key) synchronize do |client| client.call([:type, key]) end end |
#unlink(*keys) ⇒ Integer
Unlink one or more keys.
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# File 'lib/redis.rb', line 565 def unlink(*keys) synchronize do |client| client.call([:unlink] + keys) end end |
#unsubscribe(*channels) ⇒ Object
Stop listening for messages posted to the given channels.
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# File 'lib/redis.rb', line 2339 def unsubscribe(*channels) synchronize do |client| raise "Can't unsubscribe if not subscribed." unless subscribed? client.unsubscribe(*channels) end end |
#unwatch ⇒ String
Forget about all watched keys.
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# File 'lib/redis.rb', line 2434 def unwatch synchronize do |client| client.call([:unwatch]) end end |
#watch(*keys) ⇒ Object, String
Watch the given keys to determine execution of the MULTI/EXEC block.
Using a block is optional, but is necessary for thread-safety.
An ‘#unwatch` is automatically issued if an exception is raised within the block that is a subclass of StandardError and is not a ConnectionError.
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# File 'lib/redis.rb', line 2409 def watch(*keys) synchronize do |client| res = client.call([:watch, *keys]) if block_given? begin yield(self) rescue ConnectionError raise rescue StandardError unwatch raise end else res end end end |
#with_reconnect(val = true, &blk) ⇒ Object
Run code with the client reconnecting
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# File 'lib/redis.rb', line 73 def with_reconnect(val = true, &blk) synchronize do |client| client.with_reconnect(val, &blk) end end |
#without_reconnect(&blk) ⇒ Object
Run code without the client reconnecting
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# File 'lib/redis.rb', line 80 def without_reconnect(&blk) with_reconnect(false, &blk) end |
#xack(key, group, *ids) ⇒ Integer
Removes one or multiple entries from the pending entries list of a stream consumer group.
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# File 'lib/redis.rb', line 3175 def xack(key, group, *ids) args = [:xack, key, group].concat(ids.flatten) synchronize { |client| client.call(args) } end |
#xadd(key, entry, approximate: nil, maxlen: nil, id: '*') ⇒ String
Add new entry to the stream.
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# File 'lib/redis.rb', line 2975 def xadd(key, entry, approximate: nil, maxlen: nil, id: '*') args = [:xadd, key] if maxlen args << "MAXLEN" args << "~" if approximate args << maxlen end args << id args.concat(entry.to_a.flatten) synchronize { |client| client.call(args) } end |
#xclaim(key, group, consumer, min_idle_time, *ids, **opts) ⇒ Hash{String => Hash}, Array<String>
Changes the ownership of a pending entry
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# File 'lib/redis.rb', line 3212 def xclaim(key, group, consumer, min_idle_time, *ids, **opts) args = [:xclaim, key, group, consumer, min_idle_time].concat(ids.flatten) args.concat(['IDLE', opts[:idle].to_i]) if opts[:idle] args.concat(['TIME', opts[:time].to_i]) if opts[:time] args.concat(['RETRYCOUNT', opts[:retrycount]]) if opts[:retrycount] args << 'FORCE' if opts[:force] args << 'JUSTID' if opts[:justid] blk = opts[:justid] ? Noop : HashifyStreamEntries synchronize { |client| client.call(args, &blk) } end |
#xdel(key, *ids) ⇒ Integer
Delete entries by entry ids.
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# File 'lib/redis.rb', line 3015 def xdel(key, *ids) args = [:xdel, key].concat(ids.flatten) synchronize { |client| client.call(args) } end |
#xgroup(subcommand, key, group, id_or_consumer = nil, mkstream: false) ⇒ String, Integer
Manages the consumer group of the stream.
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# File 'lib/redis.rb', line 3123 def xgroup(subcommand, key, group, id_or_consumer = nil, mkstream: false) args = [:xgroup, subcommand, key, group, id_or_consumer, (mkstream ? 'MKSTREAM' : nil)].compact synchronize { |client| client.call(args) } end |
#xinfo(subcommand, key, group = nil) ⇒ Hash+
Returns the stream information each subcommand.
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# File 'lib/redis.rb', line 2946 def xinfo(subcommand, key, group = nil) args = [:xinfo, subcommand, key, group].compact synchronize do |client| client.call(args) do |reply| case subcommand.to_s.downcase when 'stream' then Hashify.call(reply) when 'groups', 'consumers' then reply.map { |arr| Hashify.call(arr) } else reply end end end end |
#xlen(key) ⇒ Integer
Returns the number of entries inside a stream.
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# File 'lib/redis.rb', line 3074 def xlen(key) synchronize { |client| client.call([:xlen, key]) } end |
#xpending(key, group, *args) ⇒ Hash+
Fetches not acknowledging pending entries
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# File 'lib/redis.rb', line 3241 def xpending(key, group, *args) command_args = [:xpending, key, group] case args.size when 0, 3, 4 command_args.concat(args) else raise ArgumentError, "wrong number of arguments (given #{args.size + 2}, expected 2, 5 or 6)" end summary_needed = args.empty? blk = summary_needed ? HashifyStreamPendings : HashifyStreamPendingDetails synchronize { |client| client.call(command_args, &blk) } end |
#xrange(key, start = '-', range_end = '+', count: nil) ⇒ Array<Array<String, Hash>>
Fetches entries of the stream in ascending order.
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# File 'lib/redis.rb', line 3037 def xrange(key, start = '-', range_end = '+', count: nil) args = [:xrange, key, start, range_end] args.concat(['COUNT', count]) if count synchronize { |client| client.call(args, &HashifyStreamEntries) } end |
#xread(keys, ids, count: nil, block: nil) ⇒ Hash{String => Hash{String => Hash}}
Fetches entries from one or multiple streams. Optionally blocking.
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# File 'lib/redis.rb', line 3095 def xread(keys, ids, count: nil, block: nil) args = [:xread] args << 'COUNT' << count if count args << 'BLOCK' << block.to_i if block _xread(args, keys, ids, block) end |
#xreadgroup(group, consumer, keys, ids, count: nil, block: nil, noack: nil) ⇒ Hash{String => Hash{String => Hash}}
Fetches a subset of the entries from one or multiple streams related with the consumer group. Optionally blocking.
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# File 'lib/redis.rb', line 3153 def xreadgroup(group, consumer, keys, ids, count: nil, block: nil, noack: nil) args = [:xreadgroup, 'GROUP', group, consumer] args << 'COUNT' << count if count args << 'BLOCK' << block.to_i if block args << 'NOACK' if noack _xread(args, keys, ids, block) end |
#xrevrange(key, range_end = '+', start = '-', count: nil) ⇒ Array<Array<String, Hash>>
Fetches entries of the stream in descending order.
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# File 'lib/redis.rb', line 3060 def xrevrange(key, range_end = '+', start = '-', count: nil) args = [:xrevrange, key, range_end, start] args.concat(['COUNT', count]) if count synchronize { |client| client.call(args, &HashifyStreamEntries) } end |
#xtrim(key, maxlen, approximate: false) ⇒ Integer
Trims older entries of the stream if needed.
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# File 'lib/redis.rb', line 2999 def xtrim(key, maxlen, approximate: false) args = [:xtrim, key, 'MAXLEN', (approximate ? '~' : nil), maxlen].compact synchronize { |client| client.call(args) } end |
#zadd(key, *args, nx: nil, xx: nil, ch: nil, incr: nil) ⇒ Boolean, ...
Add one or more members to a sorted set, or update the score for members that already exist.
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# File 'lib/redis.rb', line 1589 def zadd(key, *args, nx: nil, xx: nil, ch: nil, incr: nil) command = [:zadd, key] command << "NX" if nx command << "XX" if xx command << "CH" if ch command << "INCR" if incr synchronize do |client| if args.size == 1 && args[0].is_a?(Array) # Variadic: return float if INCR, integer if !INCR client.call(command + args[0], &(incr ? Floatify : nil)) elsif args.size == 2 # Single pair: return float if INCR, boolean if !INCR client.call(command + args, &(incr ? Floatify : Boolify)) else raise ArgumentError, "wrong number of arguments" end end end |
#zcard(key) ⇒ Integer
Get the number of members in a sorted set.
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# File 'lib/redis.rb', line 1552 def zcard(key) synchronize do |client| client.call([:zcard, key]) end end |
#zcount(key, min, max) ⇒ Integer
Count the members in a sorted set with scores within the given values.
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# File 'lib/redis.rb', line 2051 def zcount(key, min, max) synchronize do |client| client.call([:zcount, key, min, max]) end end |
#zincrby(key, increment, member) ⇒ Float
Increment the score of a member in a sorted set.
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# File 'lib/redis.rb', line 1619 def zincrby(key, increment, member) synchronize do |client| client.call([:zincrby, key, increment, member], &Floatify) end end |
#zinterstore(destination, keys, weights: nil, aggregate: nil) ⇒ Integer
Intersect multiple sorted sets and store the resulting sorted set in a new key.
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# File 'lib/redis.rb', line 2071 def zinterstore(destination, keys, weights: nil, aggregate: nil) args = [:zinterstore, destination, keys.size, *keys] if weights args << "WEIGHTS" args.concat(weights) end args << "AGGREGATE" << aggregate if aggregate synchronize do |client| client.call(args) end end |
#zlexcount(key, min, max) ⇒ Integer
Count the members, with the same score in a sorted set, within the given lexicographical range.
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# File 'lib/redis.rb', line 1870 def zlexcount(key, min, max) synchronize do |client| client.call([:zlexcount, key, min, max]) end end |
#zpopmax(key, count = nil) ⇒ Array<String, Float>+
Removes and returns up to count members with the highest scores in the sorted set stored at key.
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# File 'lib/redis.rb', line 1670 def zpopmax(key, count = nil) synchronize do |client| members = client.call([:zpopmax, key, count].compact, &FloatifyPairs) count.to_i > 1 ? members : members.first end end |
#zpopmin(key, count = nil) ⇒ Array<String, Float>+
Removes and returns up to count members with the lowest scores in the sorted set stored at key.
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# File 'lib/redis.rb', line 1691 def zpopmin(key, count = nil) synchronize do |client| members = client.call([:zpopmin, key, count].compact, &FloatifyPairs) count.to_i > 1 ? members : members.first end end |
#zrange(key, start, stop, withscores: false, with_scores: withscores) ⇒ Array<String>, Array<[String, Float]>
Return a range of members in a sorted set, by index.
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# File 'lib/redis.rb', line 1773 def zrange(key, start, stop, withscores: false, with_scores: withscores) args = [:zrange, key, start, stop] if with_scores args << "WITHSCORES" block = FloatifyPairs end synchronize do |client| client.call(args, &block) end end |
#zrangebylex(key, min, max, limit: nil) ⇒ Array<String>, Array<[String, Float]>
Return a range of members with the same score in a sorted set, by lexicographical ordering
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# File 'lib/redis.rb', line 1897 def zrangebylex(key, min, max, limit: nil) args = [:zrangebylex, key, min, max] if limit args << "LIMIT" args.concat(limit) end synchronize do |client| client.call(args) end end |
#zrangebyscore(key, min, max, withscores: false, with_scores: withscores, limit: nil) ⇒ Array<String>, Array<[String, Float]>
Return a range of members in a sorted set, by score.
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# File 'lib/redis.rb', line 1961 def zrangebyscore(key, min, max, withscores: false, with_scores: withscores, limit: nil) args = [:zrangebyscore, key, min, max] if with_scores args << "WITHSCORES" block = FloatifyPairs end if limit args << "LIMIT" args.concat(limit) end synchronize do |client| client.call(args, &block) end end |
#zrank(key, member) ⇒ Integer
Determine the index of a member in a sorted set.
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# File 'lib/redis.rb', line 1815 def zrank(key, member) synchronize do |client| client.call([:zrank, key, member]) end end |
#zrem(key, member) ⇒ Boolean, Integer
Remove one or more members from a sorted set.
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# File 'lib/redis.rb', line 1642 def zrem(key, member) synchronize do |client| client.call([:zrem, key, member]) do |reply| if member.is_a? Array # Variadic: return integer reply else # Single argument: return boolean Boolify.call(reply) end end end end |
#zremrangebyrank(key, start, stop) ⇒ Integer
Remove all members in a sorted set within the given indexes.
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# File 'lib/redis.rb', line 1846 def zremrangebyrank(key, start, stop) synchronize do |client| client.call([:zremrangebyrank, key, start, stop]) end end |
#zremrangebyscore(key, min, max) ⇒ Integer
Remove all members in a sorted set within the given scores.
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# File 'lib/redis.rb', line 2028 def zremrangebyscore(key, min, max) synchronize do |client| client.call([:zremrangebyscore, key, min, max]) end end |
#zrevrange(key, start, stop, withscores: false, with_scores: withscores) ⇒ Object
Return a range of members in a sorted set, by index, with scores ordered from high to low.
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# File 'lib/redis.rb', line 1797 def zrevrange(key, start, stop, withscores: false, with_scores: withscores) args = [:zrevrange, key, start, stop] if with_scores args << "WITHSCORES" block = FloatifyPairs end synchronize do |client| client.call(args, &block) end end |
#zrevrangebylex(key, max, min, limit: nil) ⇒ Object
Return a range of members with the same score in a sorted set, by reversed lexicographical ordering. Apart from the reversed ordering, #zrevrangebylex is similar to #zrangebylex.
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# File 'lib/redis.rb', line 1921 def zrevrangebylex(key, max, min, limit: nil) args = [:zrevrangebylex, key, max, min] if limit args << "LIMIT" args.concat(limit) end synchronize do |client| client.call(args) end end |
#zrevrangebyscore(key, max, min, withscores: false, with_scores: withscores, limit: nil) ⇒ Object
Return a range of members in a sorted set, by score, with scores ordered from high to low.
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# File 'lib/redis.rb', line 1993 def zrevrangebyscore(key, max, min, withscores: false, with_scores: withscores, limit: nil) args = [:zrevrangebyscore, key, max, min] if with_scores args << "WITHSCORES" block = FloatifyPairs end if limit args << "LIMIT" args.concat(limit) end synchronize do |client| client.call(args, &block) end end |
#zrevrank(key, member) ⇒ Integer
Determine the index of a member in a sorted set, with scores ordered from high to low.
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# File 'lib/redis.rb', line 1827 def zrevrank(key, member) synchronize do |client| client.call([:zrevrank, key, member]) end end |
#zscan(key, cursor, **options) ⇒ String, Array<[String, Float]>
Scan a sorted set
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# File 'lib/redis.rb', line 2747 def zscan(key, cursor, **) _scan(:zscan, cursor, [key], **) do |reply| [reply[0], FloatifyPairs.call(reply[1])] end end |
#zscan_each(key, **options, &block) ⇒ Enumerator
Scan a sorted set
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# File 'lib/redis.rb', line 2764 def zscan_each(key, **, &block) return to_enum(:zscan_each, key, **) unless block_given? cursor = 0 loop do cursor, values = zscan(key, cursor, **) values.each(&block) break if cursor == "0" end end |
#zscore(key, member) ⇒ Float
Get the score associated with the given member in a sorted set.
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# File 'lib/redis.rb', line 1749 def zscore(key, member) synchronize do |client| client.call([:zscore, key, member], &Floatify) end end |
#zunionstore(destination, keys, weights: nil, aggregate: nil) ⇒ Integer
Add multiple sorted sets and store the resulting sorted set in a new key.
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# File 'lib/redis.rb', line 2099 def zunionstore(destination, keys, weights: nil, aggregate: nil) args = [:zunionstore, destination, keys.size, *keys] if weights args << "WEIGHTS" args.concat(weights) end args << "AGGREGATE" << aggregate if aggregate synchronize do |client| client.call(args) end end |