Re: how to upgrade database schema in M-M environment
Zero downtime isn't possible if you're changing DDL. It can be minimised if the app can virtualise its database layer (copy the DB, switch temporarily to that DB, upgrade the original DB, let that upgrade propagate to the slave, update the upgraded DB from the temp working copy, then switch back).
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May 12, 2013 11:13PM
Re: how to upgrade database schema in M-M environment
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May 13, 2013 12:02PM
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