Keydb Eng ((link)) -

: Multithreading prevents "head-of-line blocking," where a single long-running command (like KEYS * or a large SMEMBERS ) stalls all other operations.

Because of its high performance, KeyDB often eliminates the need for complex sharding architectures, allowing a single node to do more work. Deployment and Configuration keydb eng

robj *o = lookupKeyRead(c->db, c->key);