module ActionController::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.

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

Note: To turn off all caching, 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 (MemoryStore 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')

Public Class Methods

page_cache_extension() click to toggle source
# File lib/action_controller/caching.rb, line 66
def self.page_cache_extension
  ActiveSupport::Deprecation.deprecation_warning(:page_cache_extension, :default_static_extension)
  default_static_extension
end
page_cache_extension=(extension) click to toggle source
# File lib/action_controller/caching.rb, line 61
def self.page_cache_extension=(extension)
  ActiveSupport::Deprecation.deprecation_warning(:page_cache_extension, :default_static_extension)
  self.default_static_extension = extension
end

Public Instance Methods

view_cache_dependencies() click to toggle source
# File lib/action_controller/caching.rb, line 85
def view_cache_dependencies
  self.class._view_cache_dependencies.map { |dep| instance_exec(&dep) }.compact
end

Protected Instance Methods

cache(key, options = {}) { || ... } click to toggle source

Convenience accessor.

# File lib/action_controller/caching.rb, line 91
def cache(key, options = {}, &block)
  if cache_configured?
    cache_store.fetch(ActiveSupport::Cache.expand_cache_key(key, :controller), options, &block)
  else
    yield
  end
end