Sebastian Sogamoso 0547b1646d Add Server Timing middleware (#36289) ... * Add Server Timing middleware What is server timing? It's a specification that defines how the server can communicate the user-agent performance metrics about the request it is responding to. Here's the official specification: https://www.w3.org/TR/server-timing/#dfn-server-timing-header-field How does it work? This introduces a new `ServerTiming` middleware only on `development` by default, this is done using the `config.server_timing` setting. It works by subscribing to all `ActiveSupport::Notifications` and adding their duration to the `Server-Timing` header. Why is this useful? It makes looking at performance metrics in development much easier, especially when using Chrome dev tools which includes the metrics in the Network Inspector. Here's an example:  Paired on this with @guilleiguaran		2021-09-19 21:27:07 -07:00
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abstract_controller	Enable Style/ExplicitBlockArgument cop	2021-09-05 17:06:19 +02:00
action_controller	Only call wrap_parameters if it's defined (#43259)	2021-09-19 20:52:52 +02:00
action_dispatch	Add Server Timing middleware (#36289)	2021-09-19 21:27:07 -07:00
action_pack	Preparing for 7.0.0.alpha2 release	2021-09-15 18:22:51 -04:00
abstract_controller.rb
action_controller.rb	Avoid using class_eval and just include a module	2021-08-17 22:16:06 +00:00
action_dispatch.rb	Add Server Timing middleware (#36289)	2021-09-19 21:27:07 -07:00
action_pack.rb	Bump license years to 2021 [ci skip]	2021-01-01 12:21:20 +09:00