如何将Memcache服务器指定为Rack :: Session :: Memcache? [英] How to specify memcache server to Rack::Session::Memcache?

问题描述

我正在尝试将Rack应用配置为使用Memcache进行与Rack :: Session :: Memcache的会话

I'm trying to configure my Rack app to use Memcache for sessions with Rack::Session::Memcache

如何给它提供选项(例如服务器，用户名和密码)?

How do I give it the options (such as server, username and password)?

我现在有

use Rack::Session::Memcache

但是我得到了错误

在初始化"中:没有内存缓存服务器(RuntimeError)

in `initialize': No memcache servers (RuntimeError)

Heroku已将配置放入环境变量中

Heroku has put the config in environment variables

MEMCACHE_PASSWORD:           
MEMCACHE_SERVERS:            
MEMCACHE_USERNAME:           

我知道我可以使用ENV ['MEMCACHE_PASSWORD']在Ruby中获得这些，但是我不知道如何将它们提供给Rack :: Session :: Memcache

I know I can get these in Ruby with ENV['MEMCACHE_PASSWORD'] but I don't know how to give them to Rack::Session::Memcache

编辑:或也可以使用Rack :: Session :: Dalli https ://github.com/mperham/dalli

Edit: or to Rack::Session::Dalli that would be great too https://github.com/mperham/dalli

推荐答案

此配置适用于Heroku，Dalli很聪明，并且知道可以查看环境变量

This config worked for Heroku, Dalli is clever and knows to look in the environment variables

    require 'dalli'
    require 'rack/session/dalli'
    use Rack::Session::Dalli, :cache => Dalli::Client.new

在 https://github.com/mperham/dalli/commit/阅读源代码之后4ac5a99

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