Prithvi — a fast, in-memory key-value database 🔥

built from scratch in Java.

Designed for speed, simplicity, and control, Prithvi is engineered with:

1. TTL & LRU Cache – Automatic expiry + memory-efficient key eviction

2. Multi-threaded Architecture – Handles concurrent clients with zero lockups

3. Disk Persistence + WAL – Crash-safe with write-ahead logs and JSON dump

4. JWT-style Auth – Custom-built authentication layer from scratch

5. Rich Data Types – Strings, Lists, Sets — with native commands

6. Prometheus Metrics – Real-time internal observability

7. Custom TCP Protocol – Raw, low-latency control over operations

8. Official SDKs – Plug and play access for NodeJS and Python apps

Open-source, transparent, and intentionally minimal — Prithvi is a developer’s DB, built to be hacked, extended, or embedded.
Inspired by Redis, but purpose-built as a prototype that you can understand end-to-end.