(writing)
Articles
- 01Mar 22, 2026 · 1 min read
Calculating likes on Instagram is not simple
The One-Liner That Takes 6 Months to Ship
- 02Mar 13, 2026 · 1 min read
Your rate limiter doesn’t work at scale.
Here’s what actually happens under the hood.
- 03Mar 12, 2026 · 1 min read
Why is Kafka so fast ?
Kafka doesn’t “queue” your messages. Here’s what actually happens under the hood.
- 04Mar 10, 2026 · 1 min read
How ChatGPT Handles 100M+ Users Without Melting GPUs
A deep dive into the engineering behind large-scale LLM inference — from the GPU memory hierarchy to the scheduling tricks that make it all work.
- 05Mar 3, 2026 · 1 min read
Qwen 3.5: The Complete Guide - Benchmarks, Local Setup, and How It Stacks Up Against Every Major Model
Alibaba’s Qwen team dropped Qwen 3.5 on February 16, 2026, and it immediately shook up the AI landscape.
- 06Mar 1, 2026 · 1 min read
How memory compaction works in agents like Claude Code ?
It is lot simpler than you might think
- 07Feb 28, 2026 · 1 min read
The ultimate guide to setting up and using Openclaw
Just give this article to openclaw and it will automatically create the tools for agent swarm
- 08Feb 27, 2026 · 1 min read
How to build beautiful apps and websites with AI ?
Just prompting is not enough
- 09Feb 17, 2026 · 1 min read
WhatsApp Went From 30 Images to 100 in One Go — Here’s What Had to Change Architecturally
A deep dive into the infrastructure, protocol, and client-side changes required to triple a media limit on a platform serving 2+ billion users.
- 10Feb 15, 2026 · 1 min read
Apache Cassandra Architecture: A Comprehensive Guide
Apache Cassandra is a distributed, wide-column NoSQL database designed to handle massive amounts of data across commodity servers with no single point of failure.
- 11Feb 14, 2026 · 1 min read
How Discord Handles 200 Million Users Without Breaking a Sweat
A deep dive into the architecture behind the world’s largest real-time communication platform
- 12Feb 13, 2026 · 1 min read
WhatsApp Handled 2 Billion Users With Just 50 Engineers. Here’s the System Design That Made It Possible.
Most startups hire 200 engineers to serve 10K users. WhatsApp served 2 billion with 50. This isn’t a motivational story — it’s an engineering masterclass in restraint.
- 13Feb 12, 2026 · 1 min read
How Netflix Handles 400,000+ Requests Per Second: A Deep Dive into Connection Pooling
Most engineers think their database is slow. The truth? Their connection strategy is what’s killing them.
- 14Feb 11, 2026 · 1 min read
RabbitMQ vs Kafka — The Real Engineering Differences
The Core Architectural Divergence
- 15Jan 2, 2025 · 1 min read
Canva uses this for analytics
With billions of users on internet everyday, the data being generated is huge.
- 16Dec 31, 2024 · 1 min read
How Netflix syncs movies/shows across devices ?
I spent an hour reading about it.
- 17Dec 31, 2024 · 1 min read
How Zomato logs billions of events everyday ?
It is the largest food delivery app in South Asia
- 18Dec 31, 2024 · 1 min read
Cloudflare uses Tries
And you think data structures/algorithms are never used
- 19Dec 31, 2024 · 1 min read
How Netflix shows personalized recommendations ?
Ever wondered how Netflix shows personalised recommendations with video thumbnails extremely fast all over the world ?
- 20Dec 31, 2024 · 1 min read
Stripe uses a fancy clock to track time.
But why ?