Architecture & scale
Production patterns from APIs I've shipped — traffic routing, data layers, and safe integrations.
Typical production flow
Client
Nginx / LB
API layer
PostgreSQL / MongoDB
Redis / QueueWorkers / Webhooks
Traffic & platform
Shipped on J&K Cabinetry, Confaero
- Vertical load balancer with Nginx reverse proxy for API routing
- Versioned REST APIs with Express and NestJS
- Clear service boundaries as products grow
Data & async
Shipped on Connectify, Replii, Confaero
- Redis caching and Socket.IO multi-instance scaling
- BullMQ background workers for async jobs
- PostgreSQL and MongoDB indexing on hot paths
Safety & payments
Shipped on HavenKeys, J&K Cabinetry, TaskForge
- JWT auth with role-based access control
- Rate limiting and guarded API surfaces
- Idempotent Stripe and webhook handling
Realtime & integrations
Shipped on Connectify, Replii, J&K Cabinetry
- Socket.IO messaging with scoped room broadcasts
- S3 media upload pipelines
- RAG replies and third-party API integrations