2d ago · 8 min read · The Problem With Most URL Shortener Tutorials Search "URL shortener system design" and you'll find hundreds of articles. Most of them give you the same thing: a single server, a database with a short_
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2d ago · 7 min read · When I started optimizing backend code, one of the first things I noticed was that our APIs were slow. Not broken — just slow. Averaging 1.2 seconds per request across 15+ endpoints. For a messaging p
Join discussion4d ago · 9 min read · Node.js Job Queues in Production: BullMQ, Bull, and Worker Threads Every non-trivial Node.js application eventually hits the same wall: a user action triggers work that takes too long to do synchronously. Send a welcome email. Resize an uploaded imag...
Join discussion4d ago · 8 min read · Node.js WebSockets in Production: Socket.IO vs ws, Scaling, and Reconnection Strategies WebSockets break the HTTP request-response model. Once you open a WebSocket connection, the server can push data to the client at any time — no polling, no long-p...
Join discussion4d ago · 9 min read · Node.js Caching in Production: Redis, In-Memory, and CDN Edge Caching is the single most high-leverage performance optimization in most production Node.js systems. Done right, it reduces database load by 80%, cuts p99 latency from seconds to millisec...
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