Simon Willison’s Weblog

30th May 2022 - Link Blog

Dragonfly: A modern replacement for Redis and Memcached (via) I was initially pretty skeptical of the tagline: does Redis really need a “modern” replacement? But the Background section of the README makes this look like a genuinely interesting project. It re-imagines Redis to have its keyspace partitioned across multiple threads, and uses the VLL lock manager described in a 2014 paper to “compose atomic multi-key operations without using mutexes or spinlocks”. The initial benchmarks show up to a 25x increase in throughput compared to Redis. It’s written in C++.