failover
Failover transfers responsibility from an unavailable component to another.
Use this when A primary service or datastore has a standby that must take over.
without the term
“If our main database server dies, we have a backup one. But would the app actually switch to it automatically and not lose data? Can you check how that works?”
with the term · How do you ask a model for failover?
Verify the supported failover path for this service. Check client reconnection, acknowledged data, and prevention of conflicting writers.
What is failover?
When the primary fails, a standby takes over and clients reconnect to it. The old primary must not keep accepting writes.
Why does failover matter when vibe coding?
A standby’s existence does not prove clients can safely use it after failure.
How do you do failover?
Use the platform’s supported mechanism and rehearse its failure and recovery boundaries.
What goes wrong with failover?
Promoting a new writer while an old writer still accepts conflicting work.
Sources for this entry
- PostgreSQL: Failover
Promotion, client routing, preventing the old primary from continuing as a writer, and restoring redundancy.
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