refactor(api): implement caching for tunnel and version status endpoints

2026-07-09 15:08:30 +07:00
parent 20b442b708
commit a4c5fa4e14
3 changed files with 70 additions and 30 deletions
@@ -1,11 +1,23 @@
 import { NextResponse } from "next/server";
 import { getTunnelStatus, getTailscaleStatus, getDownloadStatus } from "@/lib/tunnel";

+const STATUS_CACHE_TTL_MS = 3000; // coalesce rapid polls; underlying probes already cache 10s
+
+// Survive hot reload; one cache per process. Only tunnel/tailscale probes are cached —
+// download progress stays live so the enable/download UI updates smoothly.
+const statusCache = (global.__tunnelStatusCache ??= { value: null, fetchedAt: 0 });
+
 export async function GET() {
  try {
-    const [tunnel, tailscale] = await Promise.all([getTunnelStatus(), getTailscaleStatus()]);
+    let probes = statusCache.value;
+    if (!probes || Date.now() - statusCache.fetchedAt >= STATUS_CACHE_TTL_MS) {
+      const [tunnel, tailscale] = await Promise.all([getTunnelStatus(), getTailscaleStatus()]);
+      probes = { tunnel, tailscale };
+      statusCache.value = probes;
+      statusCache.fetchedAt = Date.now();
+    }
    const download = getDownloadStatus();
-    return NextResponse.json({ tunnel, tailscale, download });
+    return NextResponse.json({ ...probes, download });
  } catch (error) {
    console.error("Tunnel status error:", error);
    return NextResponse.json({ error: error.message }, { status: 500 });