Data loss can destroy a business. A solid backup strategy protects against hardware failures, human errors, and disasters. Here's how to implement bulletproof backups.
Backup Types#
Full Backup:
- Complete copy of database
- Longest to create
- Fastest to restore
- Use for: Weekly/monthly backups
Incremental Backup:
- Only changes since last backup
- Fastest to create
- Requires all increments to restore
- Use for: Daily/hourly backups
Differential Backup:
- Changes since last full backup
- Medium creation time
- Only needs full + latest differential
- Use for: Daily backups
PostgreSQL Backup#
pg_dump (Logical Backup)#
Loading code block...
pg_basebackup (Physical Backup)#
Loading code block...
Continuous Archiving (WAL)#
Loading code block...
Automated Backup Script#
Loading code block...
Kubernetes CronJob#
Loading code block...
Recovery Procedures#
Loading code block...
Backup Testing#
Loading code block...
Disaster Recovery Plan#
Loading code block...
Best Practices#
DO:
✓ Test backups regularly (monthly)
✓ Store backups in multiple regions
✓ Encrypt backups at rest
✓ Monitor backup job success
✓ Document recovery procedures
✓ Practice recovery drills
DON'T:
✗ Store backups only on same server
✗ Skip backup verification
✗ Ignore backup failures
✗ Keep backups indefinitely (storage costs)
✗ Forget to backup WAL for PITR
Conclusion#
Backups are insurance—you hope to never need them, but when you do, they're invaluable. Automate backups, test recovery regularly, and document procedures for when disaster strikes.
The time to prepare for data loss is before it happens.