为ServiceBusTransientErrorDetectionStrategy实现指数重试策略

Question

我正在尝试为Service Bus瞬态错误实施重试策略。我希望我的系统能够成倍地尝试像1s，2s，4s，8s，16s，32s，64s，128s。

    private int minBackoffDelayInMilliseconds = 2000;
    private int maxBackoffDelayInMilliseconds = 10000;
    private int deltaBackoffInMilliseconds = 2000;

    var defaultPolicy = new RetryPolicy<ServiceBusTransientErrorDetectionStrategy>(new ExponentialBackoff(maxRetries, TimeSpan.FromMilliseconds(minBackoffDelayInMilliseconds), TimeSpan.FromMilliseconds(maxBackoffDelayInMilliseconds), TimeSpan.FromMilliseconds(deltaBackoffInMilliseconds))

这看起来不错吗？此政策是否会影响系统性能？

Answer 1

这是Azure CAT团队的一篇很好的文章，展示了几个例子。

https://azure.microsoft.com/en-us/documentation/articles/best-practices-retry-service-specific/#service-bus-retry-guidelines

他们建议这样做：

namespaceManager.Settings.RetryPolicy = new RetryExponential(TimeSpan.FromSeconds(0.1),TimeSpan.FromSeconds(30), TimeSpan.FromSeconds(2), TimeSpan.FromSeconds(5), 3);