Zero-downtime migrations
Postgres FM
How to Avoid Long Exclusive Logs in Postgres
Full table rewrite will cause very long lock, and nobody will be able to talk to this table. Of course, even selects are not possible. There is one particular problem with hits, everyone. And we don't have anything inside out of a box or inside post with itself. People just keep not noticing it until they reach some thousands of TPS. This is our like, landscape of problems with making schema changes.
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