How to enable compression in Ruby on Rails?

Question

I posted a similar question here

Serving Compressed Assets in Heroku with Rack-Zippy

but decided to give up on that service, since I couldn\'t get it to work.

Answer 1

Rack::Deflater should work if you use insert_before (instead of "use"), to place it near the top of the middleware stack, prior to any other middleware that might send a response. .use places it at the bottom of the stack. On my machine the topmost middleware is Rack::Sendfile. So I would use:

config.middleware.insert_before(Rack::Sendfile, Rack::Deflater)

You can get the list of middleware in order of loading by doing rake middleware from the command line.

Note: A good link for insert_before vs Use in middleware rack