119 articles
Fix React’s ‘Maximum update depth exceeded’ error — setState in render, useEffect loops, function references in deps, and the correct patterns.
Fix failing CORS preflight (OPTIONS) requests in production — server config, credentials, allowed headers, and nginx/Express solutions with examples.
Fix ‘React Hook useState is called conditionally’ — understand the Rules of Hooks, why hooks can’t be in conditions, and the correct patterns.
Add Redis caching to a Node.js app — cache-aside pattern, TTL, cache invalidation, session storage, and rate limiting. Full code with ioredis.
Tailwind CSS vs plain CSS in 2026 — productivity, maintainability, learning curve, and which to choose for your project. Real trade-offs explained.
Build a production GraphQL API with Node.js, Apollo Server, and TypeScript — schema, resolvers, data sources, auth, and error handling. Full code.
Set up a Turborepo monorepo from scratch — multiple apps, shared packages, build caching, TypeScript, and CI/CD configuration with remote caching.
Fix CORS errors in every scenario — Express.js, nginx, browser fetch, credentials mode, preflight requests, and the security reason CORS exists.
Build secure JWT authentication in Express.js from scratch — sign tokens, verify middleware, refresh token rotation, and common security pitfalls.
Build a real-time chat and notification system with WebSockets, Socket.io, Node.js, and Redis Pub/Sub. Complete code with scaling strategies.
