fix(core): healthz bypass cache (#16455)

lib/registry.test.ts

@@ -29,4 +29,12 @@ describe('registry', () => {
         const response = await app.request('/favicon.ico');
         expect(response.status).toBe(200);
     });
+
+    // healthz
+    it('/healthz', async () => {
+        const response = await app.request('/healthz');
+        expect(response.status).toBe(200);
+        expect(response.headers.get('cache-control')).toBe('no-cache');
+        expect(await response.text()).toBe('ok');
+    });
 });

lib/registry.ts

@@ -7,6 +7,7 @@ import { serveStatic } from '@hono/node-server/serve-static';
 import { config } from '@/config';
 
 import index from '@/routes/index';
+import healthz from '@/routes/healthz';
 import robotstxt from '@/routes/robots.txt';
 import metrics from '@/routes/metrics';
 
@@ -100,7 +101,7 @@ for (const namespace in namespaces) {
 }
 
 app.get('/', index);
-app.get('/healthz', (ctx) => ctx.text('ok'));
+app.get('/healthz', healthz);
 app.get('/robots.txt', robotstxt);
 if (config.debugInfo) {
     // Only enable tracing in debug mode

lib/routes/healthz.ts

@@ -0,0 +1,8 @@
+import type { Handler } from 'hono';
+
+const handler: Handler = (ctx) => {
+    ctx.header('Cache-Control', 'no-cache');
+    return ctx.text('ok');
+};
+
+export default handler;