小编pur*_*ika的帖子

我使用 Polly 来处理一些场景，例如请求限制和超时。这些策略直接添加到 Startup.cs 中，如下所示：

var retries = //applying the retries, let say I set to 25 times with 10s delay. Total 250s.

serviceCollection
    .AddHttpClient<IApplicationApi, ApplicationApi>()
    .AddPolicyHandler((services, request) => GetRetryPolicy<ApplicationApi>(retries, services));

政策：

static IAsyncPolicy<HttpResponseMessage> GetRetryPolicy<T>(List<TimeSpan> retries, IServiceProvider services)
{
    return HttpPolicyExtensions
        .HandleTransientHttpError()
        .OrResult(msg => msg.StatusCode == System.Net.HttpStatusCode.TooManyRequests)
        .WaitAndRetryAsync(retries,
            onRetry: (outcome, timespan, retryAttempt, context) =>
            {
                //do some logging
            }
}

在 ApplicationApi.cs 中执行如下操作：

private readonly HttpClient _httpClient;
public ApplicationApi(HttpClient httpClient)
{
    _httpClient = httpClient;
}
       
public void CallApi()
{ 
      var …