In-memory key–value store with LRU eviction, hash–list indexing, sustaining <10µs access latency and persistent retrieval at ~1–2ms, epoll-based TCP server handling 10K+ concurrent connections with the RESP-2 protocol for scalable client–server communication. Benchmarked extensively via redis-benchmark achieving 92K GETs/sec and 84K SETs/sec .

Secure link-based file & text sharing system with authentication, expiry control, password protection, one-time links and access management.