c# - Windows Azure QueueClient 推荐缓存？

Question

刚刚创建了一个新的工作角色来处理来自队列的消息。默认示例包括开头的以下代码：

// QueueClient is thread-safe. Recommended that you cache 
// rather than recreating it on every request
QueueClient Client;

谁能详细说明该演示附带的评论？

Answer 1

不要每次都创建新实例。只创建一个实例并使用它。

//don't this
public class WorkerRole : RoleEntryPoint
{
    public override void Run()
    {
        // This is a sample worker implementation. Replace with your logic.
        Trace.TraceInformation("WorkerRole1 entry point called", "Information");

        while (true)
        {
            QueueClient Client = new QueueClient();
            Thread.Sleep(10000);
            Trace.TraceInformation("Working", "Information");
        }
    }
}

//use this
public class WorkerRole : RoleEntryPoint
{
    public override void Run()
    {
        // This is a sample worker implementation. Replace with your logic.
        Trace.TraceInformation("WorkerRole1 entry point called", "Information");

        QueueClient client = new QueueClient();

        while (true)
        {
            //client....
            Thread.Sleep(10000);
            Trace.TraceInformation("Working", "Information");
        }
    }
}