Practical writing about backend, frontend, architecture, and product decisions that show up when an idea has to become a real system.
WebSocket at Scale with Node.js: a practical guide comparing ws and Socket.IO for building scalable WebSocket servers. Learn Redis Pub/Sub for cross-instance delivery, backpressure with bufferedAmount, connection rate limiting, and heartbeat with timing wheel.
Learn how PostgreSQL database replication works under the hood — WAL streaming, async vs. sync modes, and how to set up a local environment with Docker, HAProxy, and two read replicas. Includes practical TypeScript examples using raw SQL, Prisma, and Drizzle.
WebSocket at Scale with Node.js: a practical guide comparing ws and Socket.IO for building scalable WebSocket servers. Learn Redis Pub/Sub for cross-instance delivery, backpressure with bufferedAmount, connection rate limiting, and heartbeat with timing wheel.
Learn how PostgreSQL database replication works under the hood — WAL streaming, async vs. sync modes, and how to set up a local environment with Docker, HAProxy, and two read replicas. Includes practical TypeScript examples using raw SQL, Prisma, and Drizzle.