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

My Lethal Trifecta talk at the Bay Area AI Security Meetup - 9th August 2025
The surprise deprecation of GPT-4o for ChatGPT consumers - 8th August 2025
GPT-5: Key characteristics, pricing and model card - 7th August 2025

caching 48 cassandra 7 memcachedb 3 reddit 25

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