mirror of
https://github.com/rails/rails.git
synced 2022-11-09 12:12:34 -05:00
update AC::Caching documentation [ci skip]
This commit is contained in:
Francesco Rodriguez
parent
a045731718
commit
191ddf2637
5 changed files with 103 additions and 87 deletions
|
|
@ -23,10 +23,10 @@ module ActionController #:nodoc:
|
|||
# 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")
|
||||
# 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')
|
||||
module Caching
|
||||
extend ActiveSupport::Concern
|
||||
extend ActiveSupport::Autoload
|
||||
|
|
@ -73,7 +73,7 @@ module ActionController #:nodoc:
|
|||
end
|
||||
|
||||
protected
|
||||
# Convenience accessor
|
||||
# Convenience accessor.
|
||||
def cache(key, options = {}, &block)
|
||||
if cache_configured?
|
||||
cache_store.fetch(ActiveSupport::Cache.expand_cache_key(key, :controller), options, &block)
|
||||
|
|
|
|||
|
|
@ -1,16 +1,16 @@
|
|||
require 'set'
|
||||
|
||||
module ActionController #:nodoc:
|
||||
module ActionController
|
||||
module Caching
|
||||
# Action caching is similar to page caching by the fact that the entire
|
||||
# output of the response is cached, but unlike page caching, every
|
||||
# request still goes through Action Pack. The key benefit of this is
|
||||
# that filters run before the cache is served, which allows for
|
||||
# authentication and other restrictions on whether someone is allowed
|
||||
# to execute such action. Example:
|
||||
# to execute such action.
|
||||
#
|
||||
# class ListsController < ApplicationController
|
||||
# before_filter :authenticate, :except => :public
|
||||
# before_filter :authenticate, except: :public
|
||||
#
|
||||
# caches_page :public
|
||||
# caches_action :index, :show
|
||||
|
|
@ -35,8 +35,8 @@ module ActionController #:nodoc:
|
|||
# <tt>http://david.example.com/lists.xml</tt>
|
||||
# are treated like separate requests and so are cached separately.
|
||||
# Keep in mind when expiring an action cache that
|
||||
# <tt>:action => 'lists'</tt> is not the same as
|
||||
# <tt>:action => 'list', :format => :xml</tt>.
|
||||
# <tt>action: 'lists'</tt> is not the same as
|
||||
# <tt>action: 'list', format: :xml</tt>.
|
||||
#
|
||||
# You can modify the default action cache path by passing a
|
||||
# <tt>:cache_path</tt> option. This will be passed directly to
|
||||
|
|
@ -53,18 +53,18 @@ module ActionController #:nodoc:
|
|||
# The following example depicts some of the points made above:
|
||||
#
|
||||
# class ListsController < ApplicationController
|
||||
# before_filter :authenticate, :except => :public
|
||||
# before_filter :authenticate, except: :public
|
||||
#
|
||||
# caches_page :public
|
||||
#
|
||||
# caches_action :index, :if => Proc.new do
|
||||
# caches_action :index, if: Proc.new do
|
||||
# !request.format.json? # cache if is not a JSON request
|
||||
# end
|
||||
#
|
||||
# caches_action :show, :cache_path => { :project => 1 },
|
||||
# :expires_in => 1.hour
|
||||
# caches_action :show, cache_path: { project: 1 },
|
||||
# expires_in: 1.hour
|
||||
#
|
||||
# caches_action :feed, :cache_path => Proc.new do
|
||||
# caches_action :feed, cache_path: Proc.new do
|
||||
# if params[:user_id]
|
||||
# user_list_url(params[:user_id, params[:id])
|
||||
# else
|
||||
|
|
@ -73,7 +73,7 @@ module ActionController #:nodoc:
|
|||
# end
|
||||
# end
|
||||
#
|
||||
# If you pass <tt>:layout => false</tt>, it will only cache your action
|
||||
# If you pass <tt>layout: false</tt>, it will only cache your action
|
||||
# content. That's useful when your layout has dynamic information.
|
||||
#
|
||||
# Warning: If the format of the request is determined by the Accept HTTP
|
||||
|
|
@ -162,9 +162,9 @@ module ActionController #:nodoc:
|
|||
class ActionCachePath
|
||||
attr_reader :path, :extension
|
||||
|
||||
# If +infer_extension+ is true, the cache path extension is looked up from the request's
|
||||
# If +infer_extension+ is +true+, the cache path extension is looked up from the request's
|
||||
# path and format. This is desirable when reading and writing the cache, but not when
|
||||
# expiring the cache - expire_action should expire the same files regardless of the
|
||||
# expiring the cache - +expire_action+ should expire the same files regardless of the
|
||||
# request format.
|
||||
def initialize(controller, options = {}, infer_extension = true)
|
||||
if infer_extension
|
||||
|
|
|
|||
|
|
@ -1,20 +1,20 @@
|
|||
module ActionController #:nodoc:
|
||||
module ActionController
|
||||
module Caching
|
||||
# Fragment caching is used for caching various blocks within
|
||||
# views without caching the entire action as a whole. This is
|
||||
# useful when certain elements of an action change frequently or
|
||||
# depend on complicated state while other parts rarely change or
|
||||
# can be shared amongst multiple parties. The caching is done using
|
||||
# the <tt>cache</tt> helper available in the Action View. See
|
||||
# the +cache+ helper available in the Action View. See
|
||||
# ActionView::Helpers::CacheHelper for more information.
|
||||
#
|
||||
# While it's strongly recommended that you use key-based cache
|
||||
# expiration (see links in CacheHelper for more information),
|
||||
# it is also possible to manually expire caches. For example:
|
||||
#
|
||||
# expire_fragment("name_of_cache")
|
||||
# expire_fragment('name_of_cache')
|
||||
module Fragments
|
||||
# Given a key (as described in <tt>expire_fragment</tt>), returns
|
||||
# Given a key (as described in +expire_fragment+), returns
|
||||
# a key suitable for use in reading, writing, or expiring a
|
||||
# cached fragment. All keys are prefixed with <tt>views/</tt> and uses
|
||||
# ActiveSupport::Cache.expand_cache_key for the expansion.
|
||||
|
|
@ -22,8 +22,8 @@ module ActionController #:nodoc:
|
|||
ActiveSupport::Cache.expand_cache_key(key.is_a?(Hash) ? url_for(key).split("://").last : key, :views)
|
||||
end
|
||||
|
||||
# Writes <tt>content</tt> to the location signified by
|
||||
# <tt>key</tt> (see <tt>expire_fragment</tt> for acceptable formats).
|
||||
# Writes +content+ to the location signified by
|
||||
# +key+ (see +expire_fragment+ for acceptable formats).
|
||||
def write_fragment(key, content, options = nil)
|
||||
return content unless cache_configured?
|
||||
|
||||
|
|
@ -35,8 +35,8 @@ module ActionController #:nodoc:
|
|||
content
|
||||
end
|
||||
|
||||
# Reads a cached fragment from the location signified by <tt>key</tt>
|
||||
# (see <tt>expire_fragment</tt> for acceptable formats).
|
||||
# Reads a cached fragment from the location signified by +key+
|
||||
# (see +expire_fragment+ for acceptable formats).
|
||||
def read_fragment(key, options = nil)
|
||||
return unless cache_configured?
|
||||
|
||||
|
|
@ -48,7 +48,7 @@ module ActionController #:nodoc:
|
|||
end
|
||||
|
||||
# Check if a cached fragment from the location signified by
|
||||
# <tt>key</tt> exists (see <tt>expire_fragment</tt> for acceptable formats)
|
||||
# +key+ exists (see +expire_fragment+ for acceptable formats).
|
||||
def fragment_exist?(key, options = nil)
|
||||
return unless cache_configured?
|
||||
key = fragment_cache_key(key)
|
||||
|
|
@ -65,7 +65,7 @@ module ActionController #:nodoc:
|
|||
# * String - This would normally take the form of a path, like
|
||||
# <tt>pages/45/notes</tt>.
|
||||
# * Hash - Treated as an implicit call to +url_for+, like
|
||||
# <tt>{:controller => "pages", :action => "notes", :id => 45}</tt>
|
||||
# <tt>{ controller: 'pages', action: 'notes', id: 45}</tt>
|
||||
# * Regexp - Will remove any fragment that matches, so
|
||||
# <tt>%r{pages/\d*/notes}</tt> might remove all notes. Make sure you
|
||||
# don't use anchors in the regex (<tt>^</tt> or <tt>$</tt>) because
|
||||
|
|
@ -74,8 +74,8 @@ module ActionController #:nodoc:
|
|||
# only supported on caches that can iterate over all keys (unlike
|
||||
# memcached).
|
||||
#
|
||||
# +options+ is passed through to the cache store's <tt>delete</tt>
|
||||
# method (or <tt>delete_matched</tt>, for Regexp keys.)
|
||||
# +options+ is passed through to the cache store's +delete+
|
||||
# method (or <tt>delete_matched</tt>, for Regexp keys).
|
||||
def expire_fragment(key, options = nil)
|
||||
return unless cache_configured?
|
||||
key = fragment_cache_key(key) unless key.is_a?(Regexp)
|
||||
|
|
@ -89,7 +89,7 @@ module ActionController #:nodoc:
|
|||
end
|
||||
end
|
||||
|
||||
def instrument_fragment_cache(name, key)
|
||||
def instrument_fragment_cache(name, key) # :nodoc:
|
||||
ActiveSupport::Notifications.instrument("#{name}.action_controller", :key => key){ yield }
|
||||
end
|
||||
end
|
||||
|
|
|
|||
|
|
@ -1,60 +1,72 @@
|
|||
require 'fileutils'
|
||||
require 'active_support/core_ext/class/attribute_accessors'
|
||||
|
||||
module ActionController #:nodoc:
|
||||
module ActionController
|
||||
module Caching
|
||||
# Page caching is an approach to caching where the entire action output of is stored as a HTML file that the web server
|
||||
# can serve without going through Action Pack. This is the fastest way to cache your content as opposed to going dynamically
|
||||
# through the process of generating the content. Unfortunately, this incredible speed-up is only available to stateless pages
|
||||
# where all visitors are treated the same. Content management systems -- including weblogs and wikis -- have many pages that are
|
||||
# a great fit for this approach, but account-based systems where people log in and manipulate their own data are often less
|
||||
# likely candidates.
|
||||
# Page caching is an approach to caching where the entire action output of is
|
||||
# stored as a HTML file that the web server can serve without going through
|
||||
# Action Pack. This is the fastest way to cache your content as opposed to going
|
||||
# dynamically through the process of generating the content. Unfortunately, this
|
||||
# incredible speed-up is only available to stateless pages where all visitors are
|
||||
# treated the same. Content management systems -- including weblogs and wikis --
|
||||
# have many pages that are a great fit for this approach, but account-based systems
|
||||
# where people log in and manipulate their own data are often less likely candidates.
|
||||
#
|
||||
# Specifying which actions to cache is done through the <tt>caches_page</tt> class method:
|
||||
# Specifying which actions to cache is done through the +caches_page+ class method:
|
||||
#
|
||||
# class WeblogController < ActionController::Base
|
||||
# caches_page :show, :new
|
||||
# end
|
||||
#
|
||||
# This will generate cache files such as <tt>weblog/show/5.html</tt> and <tt>weblog/new.html</tt>, which match the URLs used
|
||||
# that would normally trigger dynamic page generation. Page caching works by configuring a web server to first check for the
|
||||
# existence of files on disk, and to serve them directly when found, without passing the request through to Action Pack.
|
||||
# This is much faster than handling the full dynamic request in the usual way.
|
||||
# This will generate cache files such as <tt>weblog/show/5.html</tt> and
|
||||
# <tt>weblog/new.html</tt>, which match the URLs used that would normally trigger
|
||||
# dynamic page generation. Page caching works by configuring a web server to first
|
||||
# check for the existence of files on disk, and to serve them directly when found,
|
||||
# without passing the request through to Action Pack. This is much faster than
|
||||
# handling the full dynamic request in the usual way.
|
||||
#
|
||||
# Expiration of the cache is handled by deleting the cached file, which results in a lazy regeneration approach where the cache
|
||||
# is not restored before another hit is made against it. The API for doing so mimics the options from +url_for+ and friends:
|
||||
# Expiration of the cache is handled by deleting the cached file, which results
|
||||
# in a lazy regeneration approach where the cache is not restored before another
|
||||
# hit is made against it. The API for doing so mimics the options from +url_for+ and friends:
|
||||
#
|
||||
# class WeblogController < ActionController::Base
|
||||
# def update
|
||||
# List.update(params[:list][:id], params[:list])
|
||||
# expire_page :action => "show", :id => params[:list][:id]
|
||||
# redirect_to :action => "show", :id => params[:list][:id]
|
||||
# expire_page action: 'show', id: params[:list][:id]
|
||||
# redirect_to action: 'show', id: params[:list][:id]
|
||||
# end
|
||||
# end
|
||||
#
|
||||
# Additionally, you can expire caches using Sweepers that act on changes in the model to determine when a cache is supposed to be
|
||||
# expired.
|
||||
# Additionally, you can expire caches using Sweepers that act on changes in
|
||||
# the model to determine when a cache is supposed to be expired.
|
||||
module Pages
|
||||
extend ActiveSupport::Concern
|
||||
|
||||
included do
|
||||
# The cache directory should be the document root for the web server and is set using <tt>Base.page_cache_directory = "/document/root"</tt>.
|
||||
# For Rails, this directory has already been set to Rails.public_path (which is usually set to <tt>Rails.root + "/public"</tt>). Changing
|
||||
# this setting can be useful to avoid naming conflicts with files in <tt>public/</tt>, but doing so will likely require configuring your
|
||||
# web server to look in the new location for cached files.
|
||||
# The cache directory should be the document root for the web server and is
|
||||
# set using <tt>Base.page_cache_directory = "/document/root"</tt>. For Rails,
|
||||
# this directory has already been set to Rails.public_path (which is usually
|
||||
# set to <tt>Rails.root + "/public"</tt>). Changing this setting can be useful
|
||||
# to avoid naming conflicts with files in <tt>public/</tt>, but doing so will
|
||||
# likely require configuring your web server to look in the new location for
|
||||
# cached files.
|
||||
class_attribute :page_cache_directory
|
||||
self.page_cache_directory ||= ''
|
||||
|
||||
# Most Rails requests do not have an extension, such as <tt>/weblog/new</tt>. In these cases, the page caching mechanism will add one in
|
||||
# order to make it easy for the cached files to be picked up properly by the web server. By default, this cache extension is <tt>.html</tt>.
|
||||
# If you want something else, like <tt>.php</tt> or <tt>.shtml</tt>, just set Base.page_cache_extension. In cases where a request already has an
|
||||
# extension, such as <tt>.xml</tt> or <tt>.rss</tt>, page caching will not add an extension. This allows it to work well with RESTful apps.
|
||||
# Most Rails requests do not have an extension, such as <tt>/weblog/new</tt>.
|
||||
# In these cases, the page caching mechanism will add one in order to make it
|
||||
# easy for the cached files to be picked up properly by the web server. By
|
||||
# default, this cache extension is <tt>.html</tt>. If you want something else,
|
||||
# like <tt>.php</tt> or <tt>.shtml</tt>, just set Base.page_cache_extension.
|
||||
# In cases where a request already has an extension, such as <tt>.xml</tt>
|
||||
# or <tt>.rss</tt>, page caching will not add an extension. This allows it
|
||||
# to work well with RESTful apps.
|
||||
class_attribute :page_cache_extension
|
||||
self.page_cache_extension ||= '.html'
|
||||
|
||||
# The compression used for gzip. If false (default), the page is not compressed.
|
||||
# If can be a symbol showing the ZLib compression method, for example, :best_compression
|
||||
# or :best_speed or an integer configuring the compression level.
|
||||
# The compression used for gzip. If +false+ (default), the page is not compressed.
|
||||
# If can be a symbol showing the ZLib compression method, for example, <tt>:best_compression</tt>
|
||||
# or <tt>:best_speed</tt> or an integer configuring the compression level.
|
||||
class_attribute :page_cache_compression
|
||||
self.page_cache_compression ||= false
|
||||
end
|
||||
|
|
@ -62,7 +74,7 @@ module ActionController #:nodoc:
|
|||
module ClassMethods
|
||||
# Expires the page that was cached with the +path+ as a key.
|
||||
#
|
||||
# expire_page "/lists/show"
|
||||
# expire_page '/lists/show'
|
||||
def expire_page(path)
|
||||
return unless perform_caching
|
||||
path = page_cache_path(path)
|
||||
|
|
@ -75,7 +87,7 @@ module ActionController #:nodoc:
|
|||
|
||||
# Manually cache the +content+ in the key determined by +path+.
|
||||
#
|
||||
# cache_page "I'm the cached content", "/lists/show"
|
||||
# cache_page "I'm the cached content", '/lists/show'
|
||||
def cache_page(content, path, extension = nil, gzip = Zlib::BEST_COMPRESSION)
|
||||
return unless perform_caching
|
||||
path = page_cache_path(path, extension)
|
||||
|
|
@ -90,19 +102,19 @@ module ActionController #:nodoc:
|
|||
end
|
||||
|
||||
# Caches the +actions+ using the page-caching approach that'll store
|
||||
# the cache in a path within the page_cache_directory that
|
||||
# the cache in a path within the +page_cache_directory+ that
|
||||
# matches the triggering url.
|
||||
#
|
||||
# You can also pass a :gzip option to override the class configuration one.
|
||||
# You can also pass a <tt>:gzip</tt> option to override the class configuration one.
|
||||
#
|
||||
# # cache the index action
|
||||
# caches_page :index
|
||||
#
|
||||
# # cache the index action except for JSON requests
|
||||
# caches_page :index, :if => Proc.new { !request.format.json? }
|
||||
# caches_page :index, if: Proc.new { !request.format.json? }
|
||||
#
|
||||
# # don't gzip images
|
||||
# caches_page :image, :gzip => false
|
||||
# caches_page :image, gzip: false
|
||||
def caches_page(*actions)
|
||||
return unless perform_caching
|
||||
options = actions.extract_options!
|
||||
|
|
@ -144,7 +156,7 @@ module ActionController #:nodoc:
|
|||
|
||||
# Expires the page that was cached with the +options+ as a key.
|
||||
#
|
||||
# expire_page :controller => "lists", :action => "show"
|
||||
# expire_page controller: 'lists', action: 'show'
|
||||
def expire_page(options = {})
|
||||
return unless self.class.perform_caching
|
||||
|
||||
|
|
@ -161,10 +173,11 @@ module ActionController #:nodoc:
|
|||
end
|
||||
end
|
||||
|
||||
# Manually cache the +content+ in the key determined by +options+. If no content is provided, the contents of response.body is used.
|
||||
# If no options are provided, the url of the current request being handled is used.
|
||||
# Manually cache the +content+ in the key determined by +options+. If no content is provided,
|
||||
# the contents of response.body is used. If no options are provided, the url of the current
|
||||
# request being handled is used.
|
||||
#
|
||||
# cache_page "I'm the cached content", :controller => "lists", :action => "show"
|
||||
# cache_page "I'm the cached content", controller: 'lists', action: 'show'
|
||||
def cache_page(content = nil, options = nil, gzip = Zlib::BEST_COMPRESSION)
|
||||
return unless self.class.perform_caching && caching_allowed?
|
||||
|
||||
|
|
|
|||
|
|
@ -1,33 +1,36 @@
|
|||
module ActionController #:nodoc:
|
||||
module ActionController
|
||||
module Caching
|
||||
# Sweepers are the terminators of the caching world and responsible for expiring caches when Active Record objects change.
|
||||
# They do this by being half-observers, half-filters and implementing callbacks for both roles. A Sweeper example:
|
||||
# Sweepers are the terminators of the caching world and responsible for expiring
|
||||
# caches when Active Record objects change. They do this by being half-observers,
|
||||
# half-filters and implementing callbacks for both roles.
|
||||
#
|
||||
# class ListSweeper < ActionController::Caching::Sweeper
|
||||
# observe List, Item
|
||||
#
|
||||
# def after_save(record)
|
||||
# list = record.is_a?(List) ? record : record.list
|
||||
# expire_page(:controller => "lists", :action => %w( show public feed ), :id => list.id)
|
||||
# expire_action(:controller => "lists", :action => "all")
|
||||
# list.shares.each { |share| expire_page(:controller => "lists", :action => "show", :id => share.url_key) }
|
||||
# expire_page(controller: 'lists', action: %w( show public feed ), id: list.id)
|
||||
# expire_action(controller: 'lists', action: 'all')
|
||||
# list.shares.each { |share| expire_page(controller: 'lists', action: 'show', id: share.url_key) }
|
||||
# end
|
||||
# end
|
||||
#
|
||||
# The sweeper is assigned in the controllers that wish to have its job performed using the <tt>cache_sweeper</tt> class method:
|
||||
# The sweeper is assigned in the controllers that wish to have its job performed using
|
||||
# the +cache_sweeper+ class method:
|
||||
#
|
||||
# class ListsController < ApplicationController
|
||||
# caches_action :index, :show, :public, :feed
|
||||
# cache_sweeper :list_sweeper, :only => [ :edit, :destroy, :share ]
|
||||
# cache_sweeper :list_sweeper, only: [ :edit, :destroy, :share ]
|
||||
# end
|
||||
#
|
||||
# In the example above, four actions are cached and three actions are responsible for expiring those caches.
|
||||
#
|
||||
# You can also name an explicit class in the declaration of a sweeper, which is needed if the sweeper is in a module:
|
||||
# You can also name an explicit class in the declaration of a sweeper, which is needed
|
||||
# if the sweeper is in a module:
|
||||
#
|
||||
# class ListsController < ApplicationController
|
||||
# caches_action :index, :show, :public, :feed
|
||||
# cache_sweeper OpenBar::Sweeper, :only => [ :edit, :destroy, :share ]
|
||||
# cache_sweeper OpenBar::Sweeper, only: [ :edit, :destroy, :share ]
|
||||
# end
|
||||
module Sweeping
|
||||
extend ActiveSupport::Concern
|
||||
|
|
|
|||
Loading…
Reference in a new issue