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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minitest	Fix backtraces for generated plugin tests	2020-10-07 15:40:56 -05:00
rails	Add Server Timing middleware (#36289)	2021-09-19 21:27:07 -07:00
rails.rb	Add benchmark method that can be called from anywhere	2020-12-04 15:52:10 +03:00