Class: Twitter::Cache::Redis

Inherits:
Object
  • Object
show all
Includes:
Helpers
Defined in:
lib/twitter/cache/redis.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Helpers

#cache, #config, #friends_cache, #user_cache

Constructor Details

#initialize(prefix = nil) ⇒ Redis

Returns a new instance of Redis.



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# File 'lib/twitter/cache/redis.rb', line 10

def initialize(prefix = nil)
  redis_url = ENV['REDIS_URL'] || config.redis
  redis = ::Redis.new(url: redis_url)
  namespace = [config.namespace, prefix].compact.join(':')
  @client = ::Redis::Namespace.new(namespace, redis: redis)
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(name, *args) ⇒ Object 



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# File 'lib/twitter/cache/redis.rb', line 17

def method_missing(name, *args)
  client.send(name, *args)
end

Instance Attribute Details

#client ⇒ Object (readonly)

Returns the value of attribute client.



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# File 'lib/twitter/cache/redis.rb', line 8

def client
  @client
end

Instance Method Details

#get(key, ttl: nil) ⇒ Object 



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# File 'lib/twitter/cache/redis.rb', line 21

def get(key, ttl: nil)
  stored = client.get(key)
  return Oj.load(stored, symbolize_keys: true) if stored
  return nil unless block_given?

  value = yield
  set(key, value, ttl: ttl)
  value
end

#set(key, value, ttl: nil) ⇒ Object 



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# File 'lib/twitter/cache/redis.rb', line 31

def set(key, value, ttl: nil)
  client.set(key, Oj.dump(value))
  client.expire(key, ttl) if ttl
end