优化数据库查询布局

server/prometheus-service.js

@@ -64,12 +64,12 @@ function createClient(baseUrl) {
 /**
  * Test Prometheus connection
  */
-async function testConnection(url) {
+async function testConnection(url, customTimeout = null) {
   const normalized = normalizeUrl(url);
   try {
     // Using native fetch to avoid follow-redirects/axios "protocol mismatch" issues in some Node environments
     const controller = new AbortController();
-    const timer = setTimeout(() => controller.abort(), QUERY_TIMEOUT);
+    const timer = setTimeout(() => controller.abort(), customTimeout || QUERY_TIMEOUT);
 
     // Node native fetch - handles http/https automatically
     const res = await fetch(`${normalized}/api/v1/status/buildinfo`, {