Rails 中的 ETAG 弱? [英] Weak ETAGs in Rails?

问题描述

在使用方法 时，告诉 Rails 使用弱而不是强 ETAG 的最佳方法是什么?fresh_when 和 stale??

What is the best way to tell rails to use weak instead of strong ETAGs when using methods fresh_when and stale??

我问的原因是 nginx(正确)从响应中删除强 ETAG 标头时启用动态 gzip 压缩.

推荐答案

我从@grosser 的回答中获取了代码并将其变成了 Gem:

I took the code from @grosser's answer and turned it into a Gem:

• https://rubygems.org/gems/rails_weak_etags
• https://github.com/johnnaegle/rails_weak_etags

您可以将其添加到您的 gemfile 中:

You can just add this to your gemfile:

gem 'rails_weak_etags'

它会在 Rack::ConditionalGet 之前安装到你的中间件中:

And it will be installed into your middleware before Rack::ConditionalGet:

> bundle exec rake middleware
....
use RailsWeakEtags::Middleware
use Rack::ConditionalGet
use Rack::ETag
....

那么所有由 rails 生成的 e-tags，无论是带有 Rack::ETag 还是带有显式 e-tags 都将被转换为 weak.使用修补过的或版本 > 1.7.3 的 nginx，将允许您使用电子标签和 gzip 压缩.

Then all the e-tags generated by rails, either with Rack::ETag or with explicit e-tags will be converted to weak. Using a patched, or version > 1.7.3 of nginx, will then let you use e-tags and gzip compression.

RACK 1.6 默认 etags 为弱 - 如果升级，此 gem 不再有用.

RACK 1.6 defaults etags to weak - this gem is no longer helpful if you upgrade.

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