health check passes even if database is down

src/app/api/health/route.ts

@@ -46,22 +46,30 @@ export async function GET(request: Request) {
   };
 
   // Check database connectivity
-  try {
-    const dbStart = Date.now();
-    await prisma.$queryRaw`SELECT 1`;
-    const dbLatency = Date.now() - dbStart;
+  if (process.env.SKIP_HEALTH_DB_CHECK === '1') {
     services.database = {
-      status: 'healthy',
-      latency: dbLatency,
-      message: 'Connected',
-      timestamp: new Date().toISOString(),
-    };
-  } catch (error) {
-    services.database = {
-      status: 'down',
-      message: error instanceof Error ? error.message : 'Connection failed',
+      status: 'unknown',
+      message: 'Database check skipped (SKIP_HEALTH_DB_CHECK=1)',
       timestamp: new Date().toISOString(),
     };
+  } else {
+    try {
+      const dbStart = Date.now();
+      await prisma.$queryRaw`SELECT 1`;
+      const dbLatency = Date.now() - dbStart;
+      services.database = {
+        status: 'healthy',
+        latency: dbLatency,
+        message: 'Connected',
+        timestamp: new Date().toISOString(),
+      };
+    } catch (error) {
+      services.database = {
+        status: 'down',
+        message: error instanceof Error ? error.message : 'Connection failed',
+        timestamp: new Date().toISOString(),
+      };
+    }
   }
 
   // Check Redis connectivity
@@ -277,18 +285,19 @@ export async function GET(request: Request) {
   }
 
   // Determine overall status
-  // Critical services: Database, Environment (critical vars only)
+  // Critical services: Database (unless skipped), Environment (critical vars only)
   // Optional services: Redis, Apple Music, CSRF_SECRET
-  
+
+  const skipDbCheck = process.env.SKIP_HEALTH_DB_CHECK === '1';
   const dbDown = services.database.status === 'down';
-  const dbHealthy = services.database.status === 'healthy';
+  const dbHealthy = services.database.status === 'healthy' || services.database.status === 'unknown'; // Unknown is OK if skipped
   const envDown = services.environment.status === 'down';
   const envHealthy = services.environment.status === 'healthy';
   const envDegraded = services.environment.status === 'degraded'; // Only optional vars missing
-  
-  // Critical services check
-  const criticalServicesDown = dbDown || envDown;
-  const criticalServicesHealthy = dbHealthy && (envHealthy || envDegraded); // Degraded env is OK (only optional vars missing)
+
+  // Critical services check - database is critical unless explicitly skipped
+  const criticalServicesDown = (dbDown && !skipDbCheck) || envDown;
+  const criticalServicesHealthy = (dbHealthy || skipDbCheck) && (envHealthy || envDegraded); // Degraded env is OK (only optional vars missing)
   
   // Optional services status (for display only, don't affect overall status)
   const optionalServicesUnknown = 
@@ -360,10 +369,21 @@ export async function GET(request: Request) {
 
 // Also support HEAD requests for lightweight health checks
 export async function HEAD() {
+  // Skip database check if requested
+  if (process.env.SKIP_HEALTH_DB_CHECK === '1') {
+    return new NextResponse(null, {
+      status: 200,
+      headers: {
+        // Cache HEAD responses for 10 seconds
+        'Cache-Control': 'public, max-age=10, stale-while-revalidate=30',
+      },
+    });
+  }
+
   try {
     // Quick database check only - lightweight for load balancers
     await prisma.$queryRaw`SELECT 1`;
-    return new NextResponse(null, { 
+    return new NextResponse(null, {
       status: 200,
       headers: {
         // Cache HEAD responses for 10 seconds
@@ -371,7 +391,7 @@ export async function HEAD() {
       },
     });
   } catch {
-    return new NextResponse(null, { 
+    return new NextResponse(null, {
       status: 503,
       headers: {
         'Cache-Control': 'no-cache', // Don't cache failures