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| author | Anatoly Mikhaylov <mikhailov@users.noreply.github.com> | 2018-09-03 14:38:56 +0100 |
|---|---|---|
| committer | Anatoly <mikhailov.anatoly@gmail.com> | 2018-09-03 20:04:54 +0100 |
| commit | 8634b4688913772468b850922d908d2c7b5b6422 (patch) | |
| tree | 649cfcfb207234d5e8135a8f165a06da54653138 /actionpack | |
| parent | e6ba30efbf107954db2707410d78d77680d69995 (diff) | |
| download | rails-8634b4688913772468b850922d908d2c7b5b6422.tar.gz rails-8634b4688913772468b850922d908d2c7b5b6422.tar.bz2 rails-8634b4688913772468b850922d908d2c7b5b6422.zip | |
Update documentation to ActionController::ConditionalGet
Two implemented but undocumented features are to help indicate that cache is fresh for 3 hours, and it may continue to be served stale for up to an additional 60 seconds to parallel requests for the same resource or up to 5 minutes while errors are being returned back while the initial synchronous revalidation is attempted.
Diffstat (limited to 'actionpack')
| -rw-r--r-- | actionpack/lib/action_controller/metal/conditional_get.rb | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/actionpack/lib/action_controller/metal/conditional_get.rb b/actionpack/lib/action_controller/metal/conditional_get.rb index 4be4557e2c..d6911ee2b5 100644 --- a/actionpack/lib/action_controller/metal/conditional_get.rb +++ b/actionpack/lib/action_controller/metal/conditional_get.rb @@ -230,6 +230,12 @@ 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!( |