Stores

Store plugins publish file-store or sql-store. You can register many. SQL stores are named schemas. Each schema is its own database.

The runtime looks them up by service id and options.schema. Plugins set sqlSchema and sqlBackend (sqlite, do, or d1) so the Cloudflare SQL plugin knows whether that schema is D1 or a Durable Object.

Plugin	Service	Backend
File store	file-store	Disk folder
SQLite store	sql-store	One .sqlite file per schema
Cloudflare SQL	sql-store	D1 or Durable Objects
R2 files	file-store	One R2 bucket

coreSet() installs the file store and the work SQLite schema. Skip file SQL plugins (sql: false on app sets) on Workers and pair Cloudflare SQL instead.

Migrations use a __migrations table. Names are scoped per plugin. Order is guaranteed only inside that plugin.