—Writing
Notes from production.
Long-form pieces on backends, Web3 infra, and what's broken at the edges of the stack.
- 01
Building an ERC-4337 Bundler From Scratch
A practical, end-to-end walkthrough of writing a UserOperation bundler in Node.js — gas estimation, nonce handling, signature validation, and the gotchas that bit me in production with HyperPNL.
web3ERC-4337nodeinfra - 02
Holding 99% Uptime With 100k Users on a Single VPS
Yuva Portal ran for two years on a Linux VPS with PM2, MongoDB, and zero managed services. Here's what kept it boring.
backendnodeopsmongodb