DADeepesh Agrawalindeepesh76780.hashnode.dev·Jul 18 · 26 min readThe Anatomy of a Voice Agent: What Happens in the 550 Milliseconds After You Stop Talking.A line-by-line tour of LiveKit's realtime stack - from the SFU that moves your packets to the four-layer language model that decides you've finished your sentence. Everything below was read directly f10
DADeepesh Agrawalindeepesh76780.hashnode.dev·Sep 15, 2025 · 9 min readJWT: A simple step-by-step deep dive (so you actually understand it)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...00
DADeepesh Agrawalindeepesh76780.hashnode.dev·Sep 11, 2025 · 5 min readDesigning a Scalable Rate Limiting Architecture — Lessons from an InterviewA 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...00
DADeepesh Agrawalindeepesh76780.hashnode.dev·Sep 9, 2025 · 5 min readUnderstanding WebRTC for Voice Bots — A Desi Developer's GuideBy 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 ...00
DADeepesh Agrawalindeepesh76780.hashnode.dev·Jun 24, 2025 · 2 min readBuild Your Own PromiseCreate 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...00
