How to get Gzip and Expires Header on a Rails 3.1.1 app on Heroku Cedar?

Question

I'm running a Rails 3.1.1 application on Heroku Cedar. By default this stack doesn't Gzip and set Expires Headers on assets. There is some doc about that, but it's not very clear : http://devcenter.heroku.com/articles/http-routing

Can somebody give me the piece of code to activate that ?

Thank you very much

Answer 1

Cedar doesn't use Nginx, so you have to gzip assets yourself with Rack::Deflater, like so :

# config.ru require ::File.expand_path('../config/environment',  __FILE__) use Rack::Deflater run YourApp::Application 

Also you can set headers for static files directly in your app :

# config/environments/production.rb config.static_cache_control = "public, max-age=3600" 

Finally you're probably better off setting up Rack::Cache to replace Varnish caching. See this blog post for more infos.

Answer 2

Shameless plug - I created a gem which enables compression, but avoids compressing images.

https://github.com/romanbsd/heroku-deflater