dragonflydb/dragonfly ? reverse-engineered prompt

Build me a fast in memory data store that works like Redis and Memcached, with the same common commands and simple setup so I can point existing apps at it without changing code. It should run as a server, support basic auth and binding options, and be optimized for high throughput, low latency, and good memory use. I’d also like it to handle snapshotting and have a clean way to add more features like vector search later.

Please make it build from source, include tests, and keep the code organized so it’s easy to understand and extend. If you need to check the latest details for Redis compatibility or build steps, look up the current docs online.