# Umang Sinha

> Backend & Systems Engineer sharing deep technical insights into system design, databases, and building reliable software.

## About
Umang Sinha is a software engineer working as an SDE-2 at vahan.ai, graduated from BITS Pilani. He is passionate about backend engineering, competitive programming, and making complex systems simpler.

## Blog
- [Probabilistic Data Structures in Go: Building and Benchmarking a Bloom Filter](https://umangsinha.in/blog/probabilistic-data-structures-bloom-filter) — How Bloom filters work internally, their mathematical foundations, and a full Go implementation with concurrency and benchmarks.
- [PostgreSQL UUID Performance: Benchmarking Random (v4) and Time-based (v7) UUIDs](https://umangsinha.in/blog/postgresql-uuid-performance-benchmark) — Comparing UUIDv4 vs UUIDv7 on insert speed, index size, disk usage, and query performance with 10M rows.
- [Beyond JavaScript: Why 0.1 + 0.2 Doesn't Equal 0.3 in Programming](https://umangsinha.in/blog/floating-point-precision) — How IEEE 754 floating-point representation works and why precision errors affect every programming language.
- [The CORS Conundrum](https://umangsinha.in/blog/cors-conundrum) — Understanding cross-origin resource sharing, why browsers restrict it, and how to implement CORS headers correctly.
- [how spaced repetition actually works: the sm-2 algorithm](https://umangsinha.in/blog/the-sm2-algorithm) — A look at the forgetting curve, memory decay, and the simple algorithm behind Anki and other spaced-repetition tools.
- [vibe coding and the death of craftsmanship](https://umangsinha.in/blog/vibe-coding-and-the-death-of-craftsmanship) — Personal reflections on how AI coding tools are reshaping the craft of software engineering.

## Professional Focus
- **Languages**: JavaScript, TypeScript, Java, Python, Go, C++
- **Specialties**: Backend Engineering, System Design, Distributed Systems, Database Optimization

## Links
- [Homepage](https://umangsinha.in)
- [Blog](https://umangsinha.in/blog)
- [Coding Stats](https://umangsinha.in/stats)
- [LinkedIn](https://linkedin.com/in/umang-sinha)
- [GitHub](https://github.com/umang-sinha)
- [X (Twitter)](https://x.com/umang13_)
- [Cal.com](https://cal.com/umang-sinha)