
JayDB
8.4#1 in document databasesFree planFree planAndroidiOSWebAPI
Visit

| Fact | JayDB | RethinkDB |
|---|---|---|
| API | The data plane uses standard REST HTTP and supports GET, PUT, DELETE, and prefix listing. | The public ReQL API includes commands such as connect, run, table, joins, reconfigure and HTTP access. |
| Authentication | Each tenant exposes an OIDC issuer and supports Authorization Code with PKCE, so browser clients do not need embedded secrets. | Users and permissions are supported, but passwords are sent in plaintext unless TLS is enabled. |
| Durability | Durable data is kept in AWS S3 or compatible object storage such as Cloudflare R2, MinIO or Wasabi. | The FAQ says writes are not acknowledged until safely committed to disk by default. |
| License | The project states that its open-source engine is released under the MIT license. | The Linux Foundation licenses RethinkDB under the permissive Apache License 2.0. |
| Limit: transactions | The product page says writes cannot be made atomically across multiple documents. | G2 reviewers report that the lack of atomic updates across multiple documents led some teams to move to PostgreSQL. |
JayDB may suit developers building static or AI-built apps that need per-user, session, or tenant data, including shared documents across users or workers. It is a limited fit for applications that require relational features, full-text search, or multi-document atomic writes.
RethinkDB suits developers building applications that need query-result updates as data changes, including collaborative apps, multiplayer games, and real-time marketplaces. It is less suited to workloads that require full ACID support or strong schema enforcement.