Valkey (an open-source alternative to Redis) has it's first release candidate for 8.0. A sample of some of the features:<p>* A new I/O threading architecture that allows dynamically adding and removing threads and increasing the max throughput by almost 3x in some cases.
* A new hash table layout for cluster mode that reduces per-key overhead ~15%.
* Intelligently embedding keys into the main hash table to further reduce overhead ~8% and improve memory locality:
* Share slot-migration state with replicas to make clusters more stable during failure modes.
* Send the full-sync over a dedicated channel to improve bootstrapping new nodes into a cluster (up to 50% faster and with less copy on write).
* New opt-in cluster metrics to identify hot slots in cluster mode. This should make it easy to plan rebalancing operations.