Apache Cayenne

Cayenne 5.0 release candidate is out. Our biggest major release in years. Leaner, (much) faster core, a simpler bootstrap, a new query language, refreshed CayenneModeler, first-class tooling for AI coding agents and dozens of other improvements. lists.apache.org/thread.html…

A new major milestone of Cayenne 5.0 is available. Lots of quality-of-life and performance improvements: new Modeler look-and-feel, tighter generated SQL, compact SQL logs, no tx wrappers for selects, new agentic skills, etc. lists.apache.org/thread/gj21…

And this was just released as 5.0-M2 and is available to everyone.

Cayenne as an agentic ORM 🙂We are going to have a complete new agentic stack in the upcoming 5.0 milestone: a Claude plugin and an MCP for all the DB-to-model-to-Java syncing for you.

Apache Cayenne 4.2.3 has been released with many bug fixes and is a recommended upgrade for all 4.2 users. Release notes: cayenne.apache.org/2025/11/c…

Apache Cayenne project just released the first milestone of Cayenne 5.0 with simplified module / class structures following the removal of some legacy stuff, also UI improvements, new query capabilities, bug fixes, etc. lists.apache.org/thread/czor…

Apache Cayenne 4.2.1 maintenance release is out. Upgraded velocity dependency for security, bug fixes in expressions, inheritance, etc.

Apache Cayenne 4.2 goes GA. It was 3 years in the making. We thank the developers / community for making it possible. There are many API improvements through the entire stack per link below. Hoping to make everyone's ORM experience even more smooth lists.apache.org/thread/mkbn…

We just posted 4.0.3 - a maintenance release of the older Cayenne 4.0. It makes that version of CayenneModeler compatible with Java 17. So if you haven't upgraded to 4.1/4.2 yet, you should still be able to work with your models.

Cayenne 4.2 release candidate 2 is available. Bug fixes and deprecation notes. Really close to GA. lists.apache.org/thread/gr6p…

You may have missed it, but ObjectSelect in Cayenne 4.2 supports subqueries with (NOT) EXISTS. Comes handy in many situations

Cayenne 4.2 is approaching GA. Just release 4.2.RC1 with some bug fixes. lists.apache.org/thread/plhk…

Cayenne 4.1.1 maintenance release is available. Resolves the issue of CayenneModeler on Java 17, also has more than a dozen bugfixes

Cayenne 4.2 goes beta. So the API is frozen, and should be safe for upgrade. Also addressed an issue with CayenneModeler startup on desktop with Java 17

Cayenne 4.2.M3 is released. Lots of critical bug fixes. Upgrade is recommended to 4.2 users. 4.2 branch is quickly stabilizing. Hoping the next release will be a Beta. cayenne.apache.org/2021/03/c…

Cayenne 4.2.M2 is out. Support for JSON and geospatial types, ordering and in-memory eval of aggregate expressions and more. lists.apache.org/thread.html…

Soon

Also check out a short video highlighting the new features: youtube.com/watch?v=GW3l7bAJ…

Exciting news! ApacheCayenne 4.1 goes final lists.apache.org/thread.html…

The first milestone of #Apache Cayenne ORM 4.2 was released recently. Subqueries support, much improved Property API, internal stack rework to better handle a number of edge cases. cayenne.apache.org/2020/04/c…