building shits
Nothing here yet.
Sep 15, 2025 · 9 min read · Skip to contentJSON Web Tokens explained from first principles, with manual signing, secure patterns, common pitfalls and ready-to-use code. Why this guide? Lots of “JWT guides” either copy the specification or show a tiny code snippet. This one exp...
Join discussion
Sep 11, 2025 · 5 min read · A few days ago, during a system design interview, I was asked a simple-looking but tricky question: “How would you design a scalable rate-limiting algorithm for millions of API requests per second?” At first glance, rate limiting sounds straightfor...
Join discussion
Sep 9, 2025 · 5 min read · By Deepesh Agrawal 👋 Why I’m Writing This Three weeks ago, I didn’t even know what WebRTC was. I was happily building voice chatbots using the "normal" way: Record audio → Send to API → Wait → Get response → Play back. Worked okay... until I tried ...
Join discussion
Jun 24, 2025 · 2 min read · Create MyPromise with then() Chaining Support We’ll implement: then() that returns a new MyPromise for chaining Proper state handling (PENDING, FULFILLED, REJECTED) Callback queueing Async execution (using setTimeout() to simulate microtasks) e...
Join discussionJun 23, 2025 · 6 min read · Ever wondered what happens when you run npm run build or how your React components magically transform into lightning-fast web applications? Let's pull back the curtain and explore the intricate machinery that powers modern frontend frameworks. The...
Join discussion