通过Rails 2.3使用x-sendfile通过Nginx服务大文件 [英] Serving Large Files Through Nginx via Rails 2.3 Using x-sendfile

问题描述

比方说，我有一个由nginx开头并由mongrel提供服务的Rails 2.3.2应用程序，在该应用程序中，我需要通过Rails提供一个较大的静态文件(以控制对其的访问).我希望Rails应用将文件传输委派给nginx，以避免阻塞杂种实例.

Let's say I have a Rails 2.3.2 application fronted by nginx and served by mongrel in which I need to serve a large static file through Rails (to control access to it). I want the Rails app to delegate the transfer of the file to nginx, to avoid blocking the mongrel instance.

可用信息似乎矛盾且不完整. 这篇文章显示了如何使用Apache以及暗示它也可以使用ngninx完成-但没有示例. 这篇文章和这篇文章建议也许毕竟不支持使用nginx的x-sendfile.

The available information seems contradictory and incomplete. This post shows how to do it with Apache, and hints that it can also be done with ngninx - but no examples. This post and this post show how to do it using the a plugin that apparently Rails 2.3 makes uncessary. This post suggests that maybe there isn't support for x-sendfile with nginx after all.

我宁愿不使用Rails现在可以自己做的事情的插件.

I'd rather not muck around with plugins for things Rails can now do by itself.

有人在没有插件和Rails 2.3/nginx/mongrel的情况下获得了类似x-sendfile的行为吗?如果没有，如何使其与插件(和/或Monkeypatch)和Rails 2.3/nginx/mongrel一起使用的最佳文档是什么?

Has anybody gotten x-sendfile-like behavior to work using no plugins and Rails 2.3/nginx/mongrel? If not, what's the best documentation for getting it to work with a plugin (and/or monkeypatch) and Rails 2.3/nginx/mongrel?

推荐答案

主要思想:您的控制器要做的就是设置nginx

The main idea: all your controller does is to set the nginx x-accel-redirect header. Once your controller method returns (which will be very fast), nginx will look at the header your Rails app set. If x-accel-redirect is set, then nginx serves the static file.

您的控制器将类似于:

def show  
  @attachment = Attachment.find(params[:id])  
  # Do anything else you need for authentication, etc. 

  head(:x_accel_redirect => '/files/' + @attachment.filename,  
   :content_type => @attachment.content_type,  
   :content_disposition => "attachment; filename=\"#{@attachment.filename}\"")  
end  

仅此一项并不能解决问题.您还需要告诉nginx有关$ RAILS_ROOT/files中的文件.将此添加到服务器块内nginx配置的末尾:

This alone won't do the trick. You need to also tell nginx about the files located at $RAILS_ROOT/files. Add this to the end of your nginx config inside the server block:

location /files {
  root /path/to/rails_app;  
  internal;  
}

将静态文件放入$ RAILS_ROOT/files，它应该可以工作.无需插件或Monkeypatching经过Rails 2.3.2和2.3.14测试.

Put the static file into $RAILS_ROOT/files and it should work. No need for plugins or monkeypatching Tested with Rails 2.3.2 and 2.3.14.

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