Simon Willison’s Weblog

Reddit is now running on Cassandra. Migrating their persistent cache over from memcacheDB to Cassandra took one developer just ten days.

Posted 13th March 2010 at 12:14 am

Recent articles

Distributing Go binaries like sqlite-scanner through PyPI using go-to-wheel - 4th February 2026
Moltbook is the most interesting place on the internet right now - 30th January 2026
Adding dynamic features to an aggressively cached website - 28th January 2026

caching 49 cassandra 7 memcachedb 3 reddit 28

Monthly briefing

Sponsor me for $10/month and get a curated email digest of the month's most important LLM developments.

Pay me to send you less!

Sponsor & subscribe