Class: Merb::Cache::RedisStore

Inherits:
AbstractStore show all
Defined in:
lib/cache/merb/redis_store.rb

Instance Method Summary collapse

Constructor Details

#initialize(config = {}) ⇒ RedisStore

Instantiate the store.

Example:

RedisStore.new                                     # => host: localhost,   port: 6379,  db: 0
RedisStore.new :servers => ["example.com"]         # => host: example.com, port: 6379,  db: 0
RedisStore.new :servers => ["example.com:23682"]   # => host: example.com, port: 23682, db: 0
RedisStore.new :servers => ["example.com:23682/1"] # => host: example.com, port: 23682, db: 1
RedisStore.new :servers => ["localhost:6379/0", "localhost:6380/0"] # => instantiate a cluster



12
13
14
 
# File 'lib/cache/merb/redis_store.rb', line 12

def initialize(config = {})
  @data = RedisFactory.create config[:servers]
end

Instance Method Details

#delete(key, parameters = {}) ⇒ Object 



43
44
45
 
# File 'lib/cache/merb/redis_store.rb', line 43

def delete(key, parameters = {})
  @data.delete normalize(key, parameters)
end

#delete_all ⇒ Object 



47
48
49
 
# File 'lib/cache/merb/redis_store.rb', line 47

def delete_all
  @data.flush_db
end

#delete_all! ⇒ Object 



51
52
53
 
# File 'lib/cache/merb/redis_store.rb', line 51

def delete_all!
  delete_all
end

#exists?(key, parameters = {}) ⇒ Boolean

Returns:

  • (Boolean) 


39
40
41
 
# File 'lib/cache/merb/redis_store.rb', line 39

def exists?(key, parameters = {})
  @data.key? normalize(key, parameters)
end

#fetch(key, parameters = {}, conditions = {}, &blk) ⇒ Object 



35
36
37
 
# File 'lib/cache/merb/redis_store.rb', line 35

def fetch(key, parameters = {}, conditions = {}, &blk)
  read(key, parameters) || (write key, yield, parameters, conditions if block_given?)
end

#read(key, parameters = {}, conditions = {}) ⇒ Object 



20
21
22
 
# File 'lib/cache/merb/redis_store.rb', line 20

def read(key, parameters = {}, conditions = {})
  @data.get normalize(key, parameters), conditions
end

#writable?(key, parameters = {}, conditions = {}) ⇒ Boolean

Returns:

  • (Boolean) 


16
17
18
 
# File 'lib/cache/merb/redis_store.rb', line 16

def writable?(key, parameters = {}, conditions = {})
  true
end

#write(key, data = nil, parameters = {}, conditions = {}) ⇒ Object 



24
25
26
27
28
29
 
# File 'lib/cache/merb/redis_store.rb', line 24

def write(key, data = nil, parameters = {}, conditions = {})
  if writable?(key, parameters, conditions)
    method = conditions && conditions[:unless_exist] ? :set_unless_exists : :set
    @data.send method, normalize(key, parameters), data, conditions
  end
end

#write_all(key, data = nil, parameters = {}, conditions = {}) ⇒ Object 



31
32
33
 
# File 'lib/cache/merb/redis_store.rb', line 31

def write_all(key, data = nil, parameters = {}, conditions = {})
  write key, data, parameters, conditions
end