Topic

Downtime

4 articles on downtime.

Guides
Cloud backup and disaster recovery, explained

Backup vs DR, what RPO and RTO really mean, the four strategy tiers from backup-restore to hot standby, honest cost tradeoffs, and how to test any of it.
Glossary
High availability

High availability means a system keeps serving users when components fail. What the nines mean, how clouds deliver HA, and what it costs in a migration.
Playbooks
How to Migrate to the Cloud with Zero Downtime

Blue-green environments, database replication, DNS traffic shifting, and rollback, the four techniques that let you migrate without taking users offline.
Guides
How to migrate a production database to the cloud safely

Dump-and-restore vs continuous replication, managed vs self-managed, cutover steps, validation queries, and the rollback plan, a working method for zero-drama database moves.