JavaScript
JavaScript Promises: From Beginner to Advanced
I used to hate Promises. Callbacks felt intuitive and Promises felt like ceremony. Then I actually learned how they work -- the constructor, chaining...
Blog
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Express.js
File Uploads in Express.js with Multer
A frustration-driven tutorial on handling file uploads in Express.js with Multer. What went wrong, why it went wrong, and the actual config that fixed it...
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Express.js
Rate Limiting and Security Best Practices in Express.js
I spent a solid week tightening security on an Express app and wrote down everything that tripped me up — rate limiting, security headers, CORS, input...
Express.js
Authentication with JWT in Express.js
I shipped JWT auth with tokens that never expired, stored in localStorage, to production. This is the post-mortem. Covers JWT structure, why your token...
JavaScript
ES2025 Features Every Developer Should Know
ES2025 adds the pipeline operator, pattern matching, Records and Tuples, Set methods, the Temporal API, and more. Some of it is genuinely exciting. Some...
JavaScript
Web Workers: Multithreading in JavaScript
JavaScript runs on a single thread, and the moment you throw something heavy at it, the whole page locks up. Web Workers give you actual background...