From 8f35bf5b158d525445328366196fb50d115a55b0 Mon Sep 17 00:00:00 2001
From: Zhengchen Tao <zhengchen.tao@outlook.com>
Date: Sat, 16 May 2026 16:53:18 +0800
Subject: [PATCH] fix(http): set CircuitBreaker.SamplingDuration to 60s

Polly StandardResilienceHandler validates SamplingDuration >= 2 * AttemptTimeout
at startup. Default SamplingDuration is 30s and our AttemptTimeout is 30s, so
the container failed to boot with OptionsValidationException.

Set SamplingDuration explicitly to 60s while keeping AttemptTimeout at 30s.
---
 Program.cs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Program.cs b/Program.cs
index 9610bf1..da95023 100644
--- a/Program.cs
+++ b/Program.cs
@@ -54,6 +54,8 @@ builder.Services.AddHttpClient("gitea", client =>
     // 仅对 5xx / 429 / 网络错误重试；4xx 由 ShouldHandle 默认配置自动跳过
     options.TotalRequestTimeout.Timeout = TimeSpan.FromSeconds(90);
     options.AttemptTimeout.Timeout = TimeSpan.FromSeconds(30);
+    // Polly 校验：SamplingDuration ≥ 2× AttemptTimeout，默认 30s 不达标
+    options.CircuitBreaker.SamplingDuration = TimeSpan.FromSeconds(60);
 });
 
 // ─── 业务服务 ──────────────────────────────────────────────