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Caching is a cheap way of speeding up slow applications by keeping the result of calculations, renderings, and database calls around for subsequent requests.

You can read more about each approach by clicking the modules below.

Note: To turn off all caching, set

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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 (MemoryStore is the default):

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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')
cache
  • References/Ruby on Rails/Rails/Classes/ActionController/ActionController::Caching

cache(key, options = {}, &block) Instance Protected methods Convenience

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cache_store=
  • References/Ruby on Rails/Rails/Classes/ActionController/ActionController::Caching/ActionController::Caching::ConfigMethods

cache_store=(store) Instance Public methods

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cache_store
  • References/Ruby on Rails/Rails/Classes/ActionController/ActionController::Caching/ActionController::Caching::ConfigMethods

cache_store() Instance Public methods

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view_cache_dependencies
  • References/Ruby on Rails/Rails/Classes/ActionController/ActionController::Caching

view_cache_dependencies() Instance Public methods

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read_fragment
  • References/Ruby on Rails/Rails/Classes/ActionController/ActionController::Caching/ActionController::Caching::Fragments

read_fragment(key, options = nil) Instance Public methods Reads a cached fragment

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write_fragment
  • References/Ruby on Rails/Rails/Classes/ActionController/ActionController::Caching/ActionController::Caching::Fragments

write_fragment(key, content, options = nil) Instance Public methods Writes

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fragment_cache_key
  • References/Ruby on Rails/Rails/Classes/ActionController/ActionController::Caching/ActionController::Caching::Fragments

fragment_cache_key(key) Instance Public methods Given a key (as described in

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expire_fragment
  • References/Ruby on Rails/Rails/Classes/ActionController/ActionController::Caching/ActionController::Caching::Fragments

expire_fragment(key, options = nil) Instance Public methods Removes fragments

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view_cache_dependency
  • References/Ruby on Rails/Rails/Classes/ActionController/ActionController::Caching/ActionController::Caching::ClassMethods

view_cache_dependency(&dependency) Instance Public methods

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fragment_exist?
  • References/Ruby on Rails/Rails/Classes/ActionController/ActionController::Caching/ActionController::Caching::Fragments

fragment_exist?(key, options = nil) Instance Public methods Check if a cached

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