There's another easier way built into memcached: When you issue a delete you can... | Hacker News

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		fleaflicker on Aug 21, 2008 \| parent \| context \| favorite \| on: How Facebook deals with memcache consistency in mu... There's another easier way built into memcached: When you issue a delete you can specify "the amount of time the client wishes the server to refuse 'add' and 'replace' commands" Maybe they couldn't afford to increase the read load so much but this seems easier than rewriting mysql's replication engine.

ashu on Aug 21, 2008 | [–]

That would not be guaranteed to be correct since you don't know the precise time required for the dbs to be consistent.

dwwatk01 on Aug 21, 2008 | [–]

memcached != memcache

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