Axios

管理后台大文件上传优化：从 Multer OOM 到预签名 URL 直传的踩坑实录

HttpClient — 401 自动刷新 + 请求去重 + 指数退避重试

The admin panel's HttpClient wraps Axios with declarative features: single-flight token refresh, request deduplication (GET + non-GET), exponential backoff retry (max 3), business code validation, and Sentry tracing — all in one 519-line class.