Prompt
Do I need high availability for a PostgreSQL database?
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Oct 7, 2026
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It depends on how important the database is to your application and how much downtime you can tolerate.
You likely do need high availability if:
- Your app must stay online nearly all the time
- Downtime directly costs money or affects customers
- You have users in different time zones and can’t afford maintenance windows
- The database is mission-critical, like for payments, orders, authentication, or production systems
- You need to survive failures of a VM, node, or even an entire zone/region
You may not need high availability if:
- It’s a dev/test database
- The app is internal and can tolerate outages
- You can easily restore from backups and accept some downtime
- The database is small or low-traffic, and a restart/manual failover is acceptable
Important distinction
High availability is different from backups:
- Backups help you recover data after loss or corruption
- High availability helps you keep serving requests during failures
A simple rule of thumb
If losing the database for even a short time would be a big problem, or if you need an uptime target like 99.9%+, then you probably want HA.
If you want, I can help you decide based on your specific use case, like workload, uptime needs, and budget.
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