How to Enable Compression in Ruby on Rails

How to enable compression in Ruby on Rails?

Enable compression

Add it to config/application.rb:

module YourApp
  class Application < Rails::Application
    config.middleware.use Rack::Deflater
  end
end

Source: http://robots.thoughtbot.com/content-compression-with-rack-deflater

HTTP-Compression in rails not working for JSON-responses

Fixed by moving compressing configurations from rails to nginx configs.
I added to <my_site>.conf:

      # Enable Gzip
      gzip  on;
      gzip_http_version 1.0;
      gzip_comp_level 2;
      gzip_min_length 1100;
      gzip_buffers     4 8k;
      gzip_proxied any;
      gzip_types
        # text/html is always compressed by HttpGzipModule
        text/css
        text/javascript
        text/xml
        text/plain
        text/x-component
        application/javascript
        application/json
        application/xml
        application/rss+xml
        font/truetype
        font/opentype
        application/vnd.ms-fontobject
        image/svg+xml;

      gzip_static on;

      gzip_proxied        expired no-cache no-store private auth;
      gzip_disable        "MSIE [1-6]\.";
      gzip_vary           on;

Thanks @Alexey Ten for help.

It works, but compressing are not visible in IE.
Some security programs on Windows catch "gzipped" HTTP-responses, extract it from archive, check for viruses and also remove Content-Encoding: gzip from header of response. IE as usual excelled :)

How enable gzip in puma server

rack deflater will work with puma

add use Rack::Deflater to your config.ru file

Take a look at this question/answer: Where to insert Rack::Deflater in the rack?

How to enable output compression (gzip) on everything that goes out of my Ruby on rails on Mongrel/WEBrick Server?

You should be able to do this using the Mongrel GZipFilter.

rails json response with gzip compression

For the response to be in gzip format we don't have to change the render method call.

If the request has the header Accept-Encoding: gzip, Rails will automatically compress the JSON response using gzip.

If you don't want the user to send a request with preset header., you can add the header to the request manually in the controller before rendering the response:

request.env['HTTP_ACCEPT_ENCODING'] = 'gzip'
render :json => response.to_json()

How to turn on GZIP compression on ruby THIN server (Rails 3.1) on windows

This tutorial will help you set up Nginx and Thin:http://www.funonrails.com/2010/03/nginx-and-thin-installation-and.html

And from what I understand, you can turn on gzip through Nginx configuration file. This shows the Nginx HttpGzipModule: http://wiki.nginx.org/HttpGzipModule

gzip compression of assets on heroku doesn't work with custom domain

You'll want to add use Rack::Deflater to your config.ru in order to get Heroku to serve compressed assets.

Your config.ru would look something like this:

require ::File.expand_path('../config/environment',  __FILE__)
use Rack::Deflater
run Rails.application

There is a good discussion on either using Rack::Deflater or some alternatives in order to serve compressed assets on Heroku, but it seems people keep coming back to Rack::Deflater.

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