Memcache-client for Ruby

Posted by Richard Tue, Jan 24 2006 21:42

A few days ago, there was a posting on the Ruby on Rails blog about a new memcache-client and cached_model. The instructions seemed straight forward so I thought I would give it a try. I added the CachedModel to a Rails application and had it working in no time. The application wasn't spread across multiple servers so there wasn't much point to it other than to test it. I decided I wanted to write a standalone ruby script to interact with my memcached server. While trying this, I ran into the following error:

memcache.rb:305:in `socket': uninitialized constant MemCache::Server::Timeout

After looking at the memcached.rb source code (a couple of times), I found that the Timeout class was not included in the memcached.rb file. It turned out to be an easy fix. I just added require 'timeout' to my script. Whether it should be included in the memcached.rb, I am not sure. Anyway, here is my script:


    require 'rubygems'
    require 'memcache'

    require 'timeout' # had to require this for MemCache

    CACHE = MemCache.new :c_threshold => 10_000,
                         :compression => true,
                         :debug => false,
                         :namespace => 'my_namespace_test',
                         :readonly => false,
                         :urlencode => false
    CACHE.servers = ["127.0.0.1:11211"]

    k = :key
    v = CACHE.get k
    if v.nil?
      puts "setting value..."
      v = "45678"
      CACHE.set k, v, 300
    else
      puts "got value: #{v}"
    end
    puts "RESULT: #{k} => #{v}"