How PlanetScale keeps your data safe

This post details PlanetScale's multi-layered approach to data safety, focusing on the underlying technologies and features that ensure data durability and integrity. It highlights the use of Vitess and MySQL, emphasizing MySQL's ACID compliance and semi-synchronous replication for durability. The post also discusses the role of cloud block storage (EBS/GCPD) for data redundancy and self-healing. It introduces PlanetScale's safe migrations and revert features, which provide auditable, rate-limited, and instantly revertable schema changes. Mandatory, validated backups are presented as a safeguard against application bugs. Security measures like encryption at rest and in transit, mandatory SSL, and automatic credential invalidation are also covered. Finally, the maturity of MySQL and Vitess is presented as a key factor in choosing PlanetScale for mission-critical applications.