如何在Heroku Cedar上的Rails 3.1.1应用程序上获取Gzip和Expires Header？

Question

我在Heroku Cedar上运行Rails 3.1.1应用程序.默认情况下,此堆栈不会Gzip并在资产上设置Expires Headers.有一些关于这方面的文档,但它不是很清楚:http://devcenter.heroku.com/articles/http-routing

有人可以给我一段代码来激活吗？

非常感谢你

Answer 1

Cedar不使用Nginx,所以你必须使用Rack :: Deflater自己使用gzip资源,如下所示:

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

您还可以直接在应用中为静态文件设置标题:

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

最后你可能最好设置Rack :: Cache来取代Varnish缓存.有关更多信息,请参阅此博客文章.

Answer 2

无耻的插件 - 我创建了一个可以压缩的宝石,但避免压缩图像.

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

Answer 3

重要的是要尽早将中间件包括在内 ActionDispatch::Static

#production.rb
config.middleware.insert_before ActionDispatch::Static, Rack::Deflater

> rake middleware
use Rack::Deflater
use ActionDispatch::Static
use Rack::Lock
use #<ActiveSupport::Cache::Strategy::LocalCache::Middleware:0x007f8e18455e90>
use Rack::Runtime
use Rack::MethodOverride
use ActionDispatch::RequestId
use Rails::Rack::Logger
use ActionDispatch::ShowExceptions
use ActionDispatch::DebugExceptions
use ActionDispatch::RemoteIp
use ActionDispatch::Reloader
use ActionDispatch::Callbacks
use ActionDispatch::Cookies
use ActionDispatch::Session::CookieStore
use ActionDispatch::Flash
use ActionDispatch::ParamsParser
use Remotipart::Middleware
use ActionDispatch::Head
use Rack::ConditionalGet
use Rack::ETag
use ActionDispatch::BestStandardsSupport
use Warden::Manager
use Rack::Mongoid::Middleware::IdentityMap
use Rack::Pjax
run MyApp::Application.routes