Enterprise Node.js That Scales

Overview

How large teams design fast, reliable systems with Node.js. We focus on patterns that are easy to explain, adopt, and scale.

Key Patterns

• API Gateway + Backend-for-Frontend (BFF) - Event-driven services with queues/streams - Domain-driven modules and clear boundaries - Circuit breakers, timeouts, and bulkheads

Reference Architecture

1. Edge: CDN, TLS, rate limiting 2) Gateway/BFF: per-app APIs, caching 3) Services: small, focused, independently deployable 4) Data: fit-for-purpose stores (SQL/NoSQL/Cache) 5) Observability: logs, metrics, traces by default

Team Practices

• Contracts first (OpenAPI), evolve without breaking - Automated testing at unit/integration/contract levels - Blue-green or canary deploys, instant rollbacks - Error budgets to balance speed and stability

Checklist

• Single responsibility per service - [ ] Clear ownership and on-call - [ ] Back-pressure and retries handled - [ ] SLOs defined per critical path

Conclusion

Scale comes from simplicity, not complexity. Adopt a few good patterns, automate the basics, and grow with confidence. Need help mapping this to your org? Keynodex can assist: https://keynodex.com/?utm_source=blog&utm_medium=referral&utm_campaign=enterprise-nodejs-architecture-patterns