[cracked]: Keydb Eng

KeyDB does not make Redis obsolete; it fills the gap where Redis’s architectural constraints hit hardware limits. For engineers building at scale, understanding KeyDB’s internals provides a blueprint for how to threadify a stateful server—one shard at a time.

: Extracting the ZIP reveals a file named keydb.cfg . keydb eng

: Distributes work across all available CPU cores to maximize hardware efficiency. KeyDB does not make Redis obsolete; it fills

Published benchmarks (KeyDB team, Snap Inc.) on a 40-core machine with memtier_benchmark: KeyDB does not make Redis obsolete

Redis uses a single main thread to process all commands. While this simplifies internals (no locks, predictable performance), it leaves modern multi-core CPUs underutilized.

: An MVCC implementation allows for non-blocking queries like SCAN and KEYS to run without degrading the performance of active workloads.