prepare (Merb::Cache::MemcacheStore)

    # File lib/merb-cache/cache-store/memcache.rb, line 23
      def prepare
        namespace = @config[:namespace] || 'merb-cache'
        host = @config[:host] || '127.0.0.1:11211'
        @memcache = MemCache.new(host, {:namespace => namespace})
        @tracking_key = "_#{namespace}_keys" unless @config[:no_tracking]
        raise NotReady unless @memcache.active?
        true
      rescue NameError
        raise NotDefined
      end