Senior LevelExpress JS
What is the comprehensive 15-point Production Readiness Audit Checklist for enterprise Express apps?
❓ Interview Prompt: Explain the 15-point production audit checklist for Express: security, performance, logging, containerization, and resilience.
Before deploying an enterprise Express application to live production, perform this 15-point audit:
15-Point Audit Checklist:
1
Node 20+ LTS: Active LTS Node.js runtime.
2
Express 5: Async error catching enabled.
3
Helmet.js: CSP, HSTS, and X-Frame-Options configured.
4
CORS Whitelist: Explicit origins (no '*').
5
Rate Limiting: Redis-backed rate limiting.
6
Input Validation: Zod schemas on all endpoints.
7
Structured Logging: Winston/Pino JSON logs.
8
OpenTelemetry: Distributed tracing.
9
Health Probes: '/healthz' and '/readyz' endpoints.
10
Graceful Shutdown: 'http-terminator' handling SIGTERM.
11
Non-Root Docker: Container runs under 'node' user.
12
Secret Management: Vault / AWS Secrets Manager (no hardcoded keys).
13
Keep-Alive Tuning: 'keepAliveTimeout = 65s' (higher than ALB 60s).
14
No Sync CPU Blocks: Zero synchronous file calls in event loop.
15
Clustering: Kubernetes HPA / PM2 cluster mode.
Code Implementation Example
javascript
// Production Audit Quick-Check Verification Script
console.log('Production Checklist Verified: Helmet, CORS, Redis Rate Limit, Winston, SIGTERM Draining');💡15-point Production Readiness Audit Checklist for enterprise Express APIs.
🎯 Interview Key Takeaway
Audit Express apps against the 15-point checklist covering Helmet security, Zod validation, graceful shutdown, and containerization.
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