Interview › Databases & Caching
What backup and restore options exist for ElastiCache Redis?
Databases & Caching · Advanced level
Answer
ElastiCache Redis or Valkey backup options include automatic backups, manual snapshots, and snapshot restore into a new cluster where supported. Pure caches may be rebuilt; authoritative data needs tested restore.
Technical explanation
Automatic backups and manual snapshots protect Redis/Valkey data where supported.
Restore usually creates or populates a new cluster and must be validated.
Memcached is volatile; rebuild rather than restore is normally the model.
Hands-on example
Restore test:
1. Take manual snapshot before upgrade.
2. Restore to staging.
3. Connect test app.
4. Verify key count and sample keys.
5. Run failover test.
6. Document restore time and data loss window.
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