ActionDispatch::GzStatic
ActionDispatch::GzStatic is a derivative of ActionDispatch::Static, that has been modified to serve the .gz files that are created by the Rails asset precompiler.
If you are using Rails to serve static assets in production, and you are using the asset precompiler, then it is probably a good idea to use this gem. If you are running on Heroku's Cedar stack, this includes you.
ActionDispatch::GzStatic is a better solution that using Rack::Deflater on your static assets, because this has the undesirable side effect of recompressing assets that are already compressed, such as images. It is still a good idea to use Rack::Deflater for your app responses, but it should be positioned after Rack::GzStatic in the middleware stack.
Installation
Add this line to your application's Gemfile:
gem 'action_dispatch-gz_static'
Add this to application.rb:
# The railtie initializer will look for ActionDispatch::Static, and swap it
# with ActionDispatch::GzStatic
config.serve_static_assets = true
# This isn't required, but is generally a good idea.
config.static_cache_control = "public, max-age=#{1.month.to_i}"
License
The MIT License (MIT)
Copyright (c) 2015 Jonathan Baudanza
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.