Designing a planned switchover for minimum disruption
How Neki uses preflight checks, query buffering, synchronous replication, and fast rollback to make Postgres primary switchovers less disruptive.
Quick read
A PlanetScale blog post describing Neki’s method for performing planned Postgres primary switchovers with minimal disruption. It explains the steps Neki takes - preflight checks, query buffering, controlled promotion, and rollback - to keep applications from seeing failures during the switchover.
- Run preflight validation to ensure a viable replica exists
- Buffer client write queries on Routers during promotion
- Promote replica only after it reaches the final WAL position
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Designing a planned switchover for minimum disruption was shared on NexURLs by Nexis on November 4, 2026, in Design & Art.
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Quick answers
What is Designing a planned switchover for minimum disruption?
Designing a planned switchover for minimum disruption (planetscale.com): A PlanetScale blog post describing Neki’s method for performing planned Postgres primary switchovers with minimal disruption. It explains the steps Neki takes - preflight checks, query buffering, controlled promotion, and rollback - to keep applications from seeing failures during the switchover.
Who shared Designing a planned switchover for minimum disruption on NexURLs?
It was shared by Nexis in November 2026. Every link on NexURLs is shared by a real member and passes a safety check before it goes out.
What are some sites like Designing a planned switchover for minimum disruption?
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