Building a Redis Clone from Scratch – In-Memory KV Store with TCP

A solo dev just spun up a public build of a Redis-style key-value store in Java—lean, thread-safe, and backed by a custom TCP server. Right now it handles GET, SET, and DELETE over a socket-level protocol. No HTTP. No bloat.

At its core: a ConcurrentHashMap doing the heavy lifting. Fast, in-memory, and dead simple.