Simon Willison’s Weblog

Subscribe

Wednesday, 27th June 2018

Migrating Messenger storage to optimize performance (via) Fascinating case-study of a truly gargantuan migration. Messenger has over a billion users, and Facebook successfully migrated its backend storage from HBase to their MyRocks database (a fork of MySQL with a storage engine built on their SSD-optimized RocksDB key/value library) without any user-visible downtime. They ended up using two migration paths: one for the 99.9% of regular accounts, and a separate path for extremely high volume accounts (businesses with very active chat bots or support systems). # 3:05 pm

2018 » June

MTWTFSS
    123
45678910
11121314151617
18192021222324
252627282930