memcached - ServiceStack ICacheClient 增量不起作用

Question

我的 ServiceStack.CacheAccess.Memcached 有问题。MemcachedClientCache。Increment 方法未按预期工作。

对于测试，我使用常规控制台应用程序和 ICacheClient 界面。

根据方法文档:

The item must be inserted into the cache before it can be changed.
The item must be inserted as a System.String.
The operation only works with System.UInt32values, so -1 always indicates that the item was not found.

所以我们开始:

ICacheClient client = new MemcachedClientCache();
string key = "test";
bool result = client.Remove(key);
Console.WriteLine("{0} removed: {1}", key, result);

//The item must be inserted as a System.String.   
result = client.Add(key, "1");
Console.WriteLine("added {0}", result);


long v = client.Increment(key, 1);
Console.WriteLine("first increment : {0}", v);

string o = client.Get<string>(key);
Console.WriteLine("first read: {0}", o);

v = client.Increment(key, 1);
Console.WriteLine("second increment: {0}", v);

o = client.Get<string>(key);
Console.WriteLine("second read: {0}", o);

结果:

• 测试已删除:True
• 添加了 True
• 第一个增量:0
• 首次阅读:1
• 第二个增量:0
• 第二次阅读:1

如您所见，增量不起作用。

enyim 的配置:

<enyim.com>
  <memcached protocol="Binary">
    <servers>
      <!-- make sure you use the same ordering of nodes in every configuration you have -->
      <add address="memcached-dev1" 
            port="11211" />
    </servers>
    <socketPool minPoolSize="10" 
                maxPoolSize="100" 
                connectionTimeout="00:00:10" 
                deadTimeout="00:02:00" />
  </memcached>
</enyim.com>

我错过了什么吗？

Answer 1

您无法以这种方式读取计数器的值，在 Enyim 项目的一个已关闭问题 ( here ) 中对此有解释。相反，只需将计数器增加 0。

var v = cacheClient.Increment(key, 0);