Redis (REmote DIctionary Server) yaiku open-source, in-memory data store — njaga data ing RAM supaya akses bisa cepet banget. Dienggo minangka cache, database, message broker, lan liyane, dihargai amarga kecepetane (sub-millisecond operations) lan struktur data sing versatile.
In-memory = cepet banget
Redis stores data in RAM (memory), not on disk → access is EXTREMELY fast
(sub-millisecond) because RAM is orders of magnitude faster than disk.
→ This speed is Redis's defining characteristic and the reason it's so popular.
(It can persist to disk too, but data primarily lives in memory.)
