diff options
Diffstat (limited to 'actionpack/lib/action_controller/metal/conditional_get.rb')
| -rw-r--r-- | actionpack/lib/action_controller/metal/conditional_get.rb | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/actionpack/lib/action_controller/metal/conditional_get.rb b/actionpack/lib/action_controller/metal/conditional_get.rb index 06b6a95ff8..29d1919ec5 100644 --- a/actionpack/lib/action_controller/metal/conditional_get.rb +++ b/actionpack/lib/action_controller/metal/conditional_get.rb @@ -1,7 +1,5 @@ # frozen_string_literal: true -require "active_support/core_ext/hash/keys" - module ActionController module ConditionalGet extend ActiveSupport::Concern @@ -230,12 +228,20 @@ module ActionController # This method will overwrite an existing Cache-Control header. # See https://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html for more possibilities. # + # HTTP Cache-Control Extensions for Stale Content. See https://tools.ietf.org/html/rfc5861 + # It helps to cache an asset and serve it while is being revalidated and/or returning with an error. + # + # expires_in 3.hours, public: true, stale_while_revalidate: 60.seconds + # expires_in 3.hours, public: true, stale_while_revalidate: 60.seconds, stale_if_error: 5.minutes + # # The method will also ensure an HTTP Date header for client compatibility. def expires_in(seconds, options = {}) response.cache_control.merge!( max_age: seconds, public: options.delete(:public), - must_revalidate: options.delete(:must_revalidate) + must_revalidate: options.delete(:must_revalidate), + stale_while_revalidate: options.delete(:stale_while_revalidate), + stale_if_error: options.delete(:stale_if_error), ) options.delete(:private) |