0547b1646d
* 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 |
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| .gitignore | ||
| CHANGELOG.md | ||
| MIT-LICENSE | ||
| RDOC_MAIN.rdoc | ||
| README.rdoc | ||
| Rakefile | ||
| railties.gemspec | ||
README.rdoc
= Railties -- Gluing the Engine to the Rails Railties is responsible for gluing all frameworks together. Overall, it: * handles the bootstrapping process for a Rails application; * manages the +rails+ command line interface; * and provides the Rails generators core. == Download The latest version of Railties can be installed with RubyGems: * gem install railties Source code can be downloaded as part of the Rails project on GitHub * https://github.com/rails/rails/tree/main/railties == License Railties is released under the MIT license: * https://opensource.org/licenses/MIT == Support API documentation is at * https://api.rubyonrails.org Bug reports can be filed for the Ruby on Rails project here: * https://github.com/rails/rails/issues Feature requests should be discussed on the rails-core mailing list here: * https://discuss.rubyonrails.org/c/rubyonrails-core