Dragonfly

Dragonfly is an in-memory datastore that speaks the Redis and Memcached protocols, so existing clients keep working while the server underneath is swapped out. Its multi-threaded, shared-nothing design handles requests across every core, and it ships as a single binary with built-in persistence and snapshot support.

Teams use it as an application cache, a session store, and a fast key-value layer for leaderboards, feature flags, and rate limiters.

The service can it next to the rest of your stack, which keeps cached data on machines you own and avoids the request-based billing of hosted cache products.