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I write about backend architecture, Node.js, and building scalable systems. Technical deep-dives with real code.
Feature Toggles: A Backend Engineer's Complete Guide
How to design, implement, and retire feature toggles in a NestJS/Node.js backend — covering toggle types, PostgreSQL + Redis storage, NestJS decorators, gradual rollouts, and avoiding the toggle graveyard.
Node.js Graceful Shutdown in Production
How to properly shut down a Node.js/NestJS server — handling SIGTERM, draining in-flight requests, closing database connections, and avoiding dropped requests during Kubernetes rolling deploys.
Socket.io at Scale: Lessons from 5,000 Concurrent Users
What we learned building AutoBazaar, a real-time auction platform that hit 5,000 concurrent users — Socket.io architecture, Redis adapter, rooms, and the mistakes we made early on.
Stripe Webhooks: Making Them Truly Idempotent
How to handle Stripe webhooks correctly in Node.js — signature verification, idempotent processing, database-level deduplication, and the failure modes that cause double charges.
PostgreSQL Query Optimization for High-Traffic Applications
Practical PostgreSQL optimization techniques from a production e-commerce platform handling 1,000+ orders/day — indexes, EXPLAIN ANALYZE, connection pooling, and the queries that actually hurt.
NestJS Guards & RBAC: JWT Authentication from Scratch
Build a complete role-based access control system in NestJS — JWT auth, custom guards, role decorators, and permission checks without a third-party library.
BullMQ Patterns: Idempotency, Retry Logic & Dead-Letter Queues
Production patterns for BullMQ in NestJS — idempotent job processing, exponential backoff retry, dead-letter queues, and handling the edge cases that burn you in production.
Feature Toggles: A Backend Engineer's Complete Guide
How to design, implement, and retire feature toggles in a NestJS/Node.js backend — covering toggle types, PostgreSQL + Redis storage, NestJS decorators, gradual rollouts, and avoiding the toggle graveyard.
Multi-Tenant SaaS: 4 Database Isolation Strategies Compared
A deep dive into schema-per-tenant, database-per-tenant, row-level security, and shared schema approaches with real PostgreSQL examples.
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