https://www.codedump.info/en/tags/distributed/ Recent content in Distributed on codedump notes Hugo en Sun, 12 Apr 2026 09:59:41 +0800 https://www.codedump.info/en/post/20260412-rockraft/ Sun, 12 Apr 2026 09:59:41 +0800 https://www.codedump.info/en/post/20260412-rockraft/ <h2 class="heading" id="motivation"> Motivation <a class="anchor" href="#motivation">#</a> </h2> <p>The Redis protocol has become the de facto standard for key-value storage protocols. Beyond the official Redis implementation, we have seen various compatible alternatives:</p> <ul> <li><a href="https://github.com/valkey-io/valkey">Valkey</a>: The Linux Foundation&rsquo;s official fork of Redis 7.2, licensed under BSD. It is the community&rsquo;s true open-source alternative after Redis switched to SSPL, fully compatible with the Redis protocol and persistence mechanisms.</li> <li><a href="https://github.com/dragonflydb/dragonfly">Dragonfly</a>: A modern multi-threaded in-memory database pursuing extreme performance, offering up to 25x the throughput of Redis with lower tail latency, but licensed under BSL (transitioning to Apache 2.0 after 4 years).</li> <li><a href="https://github.com/snapchat/keydb">KeyDB</a>: A multi-threaded Redis fork maintained by Snapchat, adding Active Replication and Flash storage extensions on top of 100% Redis API compatibility, though updates have slowed down.</li> <li><a href="https://github.com/apache/kvrocks">Kvrocks</a>: An Apache top-level project, a distributed KV storage based on RocksDB that persists data to disk, supporting dozens of terabytes at 1/5–1/10 the cost of in-memory solutions, suitable for large-capacity, low-cost scenarios.</li> </ul> <p>However, none of the above implementations have gone further on strong consistency in distributed systems. In this dimension, they all adopt the eventual consistency of the native Redis implementation.</p>