Sarvesh Rane

I wanted to really understand the Transactional Outbox pattern, so I built one from scratch in Go. It guarantees at-least-once Kafka delivery with idempotency baked in — handles 200 req/s with ~15μs processing latency and hasn't dropped an event yet.

A Layer 4 load balancer written in pure Go — no external dependencies, just the standard library. I threw 1,000 concurrent connections at it for 10 minutes straight and it handled 1,185 RPS without a single error.

Real-time chat app where messages hit everyone in the room in under 10ms. Uses Redis Pub/Sub instead of polling, so it actually feels instant. Built with Next.js and TypeScript.

An expense tracker I built because I wanted something simple that actually shows where my money goes. Django API on the backend, React dashboard up front, one Docker command to run the whole thing.

A minimal pastebin that loads fast. Stores text in PostgreSQL, serves it through Vercel's edge network, and has syntax highlighting with configurable expiry. Nothing fancy, just works.

A bookmark manager where each user's data is completely isolated using Supabase Row Level Security and Google OAuth. Tabs sync in real-time across devices — no refresh needed.