See ActiveSupport::Cache::Store for documentation.

Methods
Classes and Modules
Module ActiveSupport::Cache::Strategy
Class ActiveSupport::Cache::CompressedMemCacheStore
Class ActiveSupport::Cache::FileStore
Class ActiveSupport::Cache::MemCacheStore
Class ActiveSupport::Cache::MemoryStore
Class ActiveSupport::Cache::Store
Class ActiveSupport::Cache::SynchronizedMemoryStore
Public Class methods
expand_cache_key(key, namespace = nil)

[ show source ]

    # File activesupport/lib/active_support/cache.rb, line 57
57:     def self.expand_cache_key(key, namespace = nil)
58:       expanded_cache_key = namespace ? "#{namespace}/" : ""
59: 
60:       if ENV["RAILS_CACHE_ID"] || ENV["RAILS_APP_VERSION"]
61:         expanded_cache_key << "#{ENV["RAILS_CACHE_ID"] || ENV["RAILS_APP_VERSION"]}/"
62:       end
63: 
64:       expanded_cache_key << case
65:         when key.respond_to?(:cache_key)
66:           key.cache_key
67:         when key.is_a?(Array)
68:           key.collect { |element| expand_cache_key(element) }.to_param
69:         when key
70:           key.to_param
71:         end.to_s
72: 
73:       expanded_cache_key
74:     end
lookup_store(*store_option)

Creates a new CacheStore object according to the given options.

If no arguments are passed to this method, then a new ActiveSupport::Cache::MemoryStore object will be returned.

If you pass a Symbol as the first argument, then a corresponding cache store class under the ActiveSupport::Cache namespace will be created. For example: 

  ActiveSupport::Cache.lookup_store(:memory_store)
  # => returns a new ActiveSupport::Cache::MemoryStore object

  ActiveSupport::Cache.lookup_store(:drb_store)
  # => returns a new ActiveSupport::Cache::DRbStore object

Any additional arguments will be passed to the corresponding cache store class‘s constructor: 

  ActiveSupport::Cache.lookup_store(:file_store, "/tmp/cache")
  # => same as: ActiveSupport::Cache::FileStore.new("/tmp/cache")

If the first argument is not a Symbol, then it will simply be returned: 

  ActiveSupport::Cache.lookup_store(MyOwnCacheStore.new)
  # => returns MyOwnCacheStore.new

[ show source ]

    # File activesupport/lib/active_support/cache.rb, line 42
42:     def self.lookup_store(*store_option)
43:       store, *parameters = *([ store_option ].flatten)
44: 
45:       case store
46:       when Symbol
47:         store_class_name = (store == :drb_store ? "DRbStore" : store.to_s.camelize)
48:         store_class = ActiveSupport::Cache.const_get(store_class_name)
49:         store_class.new(*parameters)
50:       when nil
51:         ActiveSupport::Cache::MemoryStore.new
52:       else
53:         store
54:       end
55:     end