SYSTEM Cited by 1 source
Vitess¶
What it is¶
Vitess (vitess.io) is an open-source database clustering system for horizontal scaling of MySQL, originally built at YouTube (~2010) to handle its MySQL workload and later donated to the CNCF. It speaks the MySQL wire protocol, shards data across many backing MySQL instances, and handles query routing, connection pooling, and operational primitives (schema changes, cluster resharding, failover) on top.
Why it shows up on this wiki¶
Vitess is the substrate behind PlanetScale MySQL. In the Cloudflare × PlanetScale integration (2026-04-16), "Developers can choose from two of the most popular relational databases with Postgres or Vitess MySQL" (Source: sources/2026-04-16-cloudflare-deploy-postgres-and-mysql-databases-with-planetscale-workers). The article treats Vitess as implementation detail of PlanetScale MySQL — customers interact with PlanetScale's surface, not Vitess directly.
Minimal-viable page for now: Vitess has enough architectural substance (MySQL sharding, VTGate, VTTablet, vschema, reparenting) to deserve a deeper treatment if a systems-tier post about its internals is ingested in future. Until then this page exists to anchor cross-references and make the MySQL-side story on PlanetScale navigable.
Seen in¶
- sources/2026-04-16-cloudflare-deploy-postgres-and-mysql-databases-with-planetscale-workers — named as the MySQL engine under PlanetScale's "Vitess MySQL" offering in the Cloudflare integration.