module ActionController::Caching 
        Action Controller Caching
Caching is a cheap way of speeding up slow applications by keeping the result of calculations, renderings, and database calls around for subsequent requests.
Note: To turn off all caching provided by Action Controller, set
config.action_controller.perform_caching = false
Caching stores
All the caching stores from ActiveSupport::Cache are available to be used as backends for Action Controller caching.
Configuration examples (FileStore is the default):
config.action_controller.cache_store = :memory_store
config.action_controller.cache_store = :file_store, '/path/to/cache/directory'
config.action_controller.cache_store = :mem_cache_store, 'localhost'
config.action_controller.cache_store = :mem_cache_store, Memcached::Rails.new('localhost:11211')
config.action_controller.cache_store = MyOwnStore.new('parameter')
    Inherits From
- 
          module
          
AbstractController::Caching