mirror of https://github.com/rails/rails
06d3b358df
Allocations count is often an interesting proxy for performance, but not necessarily the most relevant thing to include in request logs, given they aren't a per thread metric, so the reporting is widely innacurate in multi-threaded environments. Since Ruby 3.1 there is now `GC.total_time` which is a monotonically increasing counter of time spent in GC. It still isn't really a per thread metric, but is is more interesting because it uses the same unit as the response time, allowing to better see when you have a GC pause performance issue. |
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| CHANGELOG.md | ||
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| actionpack.gemspec | ||
README.rdoc
= Action Pack -- From request to response
Action Pack is a framework for handling and responding to web requests. It
provides mechanisms for *routing* (mapping request URLs to actions), defining
*controllers* that implement actions, and generating responses. In short, Action Pack
provides the controller layer in the MVC paradigm.
It consists of several modules:
* Action Dispatch, which parses information about the web request, handles
routing as defined by the user, and does advanced processing related to HTTP
such as MIME-type negotiation, decoding parameters in POST, PATCH, or PUT bodies,
handling HTTP caching logic, cookies and sessions.
* Action Controller, which provides a base controller class that can be
subclassed to implement filters and actions to handle requests. The result
of an action is typically content generated from views.
With the Ruby on \Rails framework, users only directly interface with the
Action Controller module. Necessary Action Dispatch functionality is activated
by default and Action View rendering is implicitly triggered by Action
Controller. However, these modules are designed to function on their own and
can be used outside of \Rails.
You can read more about Action Pack in the {Action Controller Overview}[https://guides.rubyonrails.org/action_controller_overview.html] guide.
== Download and installation
The latest version of Action Pack can be installed with RubyGems:
$ gem install actionpack
Source code can be downloaded as part of the \Rails project on GitHub:
* https://github.com/rails/rails/tree/main/actionpack
== License
Action Pack is released under the MIT license:
* https://opensource.org/licenses/MIT
== Support
API documentation is at:
* https://api.rubyonrails.org
Bug reports for the Ruby on \Rails project can be filed 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