如何在azure上增加历元的大小

您有两个应用程序使用相同的使用者组访问事件中心。要么重新设计您的体系结构以拥有一个客户端应用程序,要么为每个客户端使用一个新的消费者组。如果您试图并行处理,请从中心提取一批事件,然后并行处理它们,不要在同一消费者组上有多个读卡器。

或

事件中心在内部将分区从一台主机移动到幕后的另一台主机。在这种情况下,在代码中使用简单的重试,这应该可以工作。为此,我使用 Polly . 实际上,在实践中,在重试中封装调用“云”的代码通常是一个好主意。

Polly Nuget package ):

namespace RetryPolicies
{
    using Microsoft.Extensions.Logging;
    using Polly;
    using Polly.Retry;
    using System;

    public class ExponentialRetryManager
    {
        private static readonly int MAX_RETRIES = 6;
        private RetryPolicy _retryPolicy;

        /// <summary>
        /// An exponential retry manager that will wait as follows between retries:
        ///                     
        //  2 ^ 1 = 2 seconds first, then 
        //  2 ^ 2 = 4 seconds then
        //  2 ^ 3 = 8 seconds then
        //  2 ^ 4 = 16 seconds then
        //  2 ^ 5 = 32 seconds
        //  2 ^ 6 = 64 seconds
        /// </summary>
        public ExponentialRetryManager(ILogger logger, String exceptionName = null)
        {
            _retryPolicy = Policy
                .Handle<Exception>()
                .WaitAndRetry(MAX_RETRIES, retryAttempt =>
                TimeSpan.FromSeconds(Math.Pow(1, retryAttempt)),
                (ex, timeSpan, retryAttempt, context) =>
                {
                    logger.LogWarning($"Warning! [RetryAttempt={retryAttempt.ToString()}],[Ex={ex.ToString()}]");
                });
        }

        /// <summary>
        /// Executes the passed in action using the retry policy in order to
        /// keep attempting to process until the MAX_RETRIES are reached. 
        /// </summary>
        /// <param name="action"></param>
        public void Retry(Action action)
        {
            _retryPolicy.Execute(() => action());
        }
    }
}

你可以这样称呼它:

var retryManager = new ExponentialRetryManager(log);
retryManager.Retry(() => YourMethodToProcessEventHub());