status_code=529, Upstream is overloaded, please retry later. (request id: 202610...

原文：status_code=529, Upstream is overloaded, please retry later.
译文：状态码529，上游服务器负载过高，请稍后重试。

🎯 原因分析

💡 解决方案

// 带退避机制的重试函数
async function requestWithRetry(url, options, maxRetries = 3) {
  let retryDelay = 1000; // 初始延迟1秒
  for (let i = 0; i < maxRetries; i++) {
    const res = await fetch(url, options);
    if (res.status !== 529) return res; // 非过载状态直接返回
    console.log(`上游过载，第${i + 1}次重试，延迟${retryDelay}ms`);
    await new Promise(resolve => setTimeout(resolve, retryDelay));
    retryDelay *= 2; // 指数退避：1s -> 2s -> 4s
  }
  throw new Error("重试次数已用完，上游仍过载");
}

// 调用示例
requestWithRetry("https://api.example.com/your-endpoint", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({ your: "data" })
});

🛡️ 预防措施