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A comment on How Facebook deals with memcache consistency in multiple datacenters.
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.
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.