High-performance token-bucket rate limiting service in Go.

• Built a token-bucket rate limiting service in Go sustaining 19.8K req/sec with 8.89 ms p99 latency and 0% failures under reproducible loopback load testing.
• Enforced atomic token accounting across distributed instances using Redis and Lua scripts, sustaining 14.3K req/sec while enabling shared rate-limit state across multiple application instances.
• Designed a storage-agnostic backend via Go interfaces, enabling seamless swapping between in-memory and Redis stores; added IP-based keying, rate-limit headers, and zero-allocation token decisions.

Lightweight full-text search engine in Go — indexes .txt files and serves queries over HTTP.

• Inverted index built from scratch for fast and efficient text retrieval.
• Lightweight HTTP server exposed for rapid search queries.