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PostgreSQL Logical Replicas and Snapshots: Proceed Carefully

Update 2024-Jan-24: this post has been linked from a few places after I wrote it in 2021. Just wanted to mention that there’s been ongoing discussion about logical replication and PostgreSQL. Instacart also has a newer blog post out about zero-downtime cutovers and it sounds like they’ve built some cool tooling. I think that two … Continue reading →