一、安装包

<PackageReference Include="Polly.Core" Version="8.0.0" />

二、编写重试

ResiliencePipeline pipeline = new ResiliencePipelineBuilder().AddRetry(new RetryStrategyOptions{MaxRetryAttempts = 2,Delay = TimeSpan.FromSeconds(3),OnRetry = args =>{Console.WriteLine("OnRetry, Attempt: {0}", args.AttemptNumber);return default;}}).AddTimeout(TimeSpan.FromSeconds(100)).Build();pipeline.ExecuteAsync(static async cancellationToken =>
{Console.WriteLine("重试:" + DateTime.Now);throw new DivideByZeroException();
}, CancellationToken.None).GetAwaiter().GetResult();

三、演示