This september in Paris, we are lucky to host both the OpenWorldForum and Open Source Developer Conference. And they had the common sense to host them at the same time in the same place. It's September 22th-24th in Paris. I believe it's free but requires registration.
This is a pretty exciting moment, the first public alpha release of a brand new project: Hibernate OGM. Hibernate OGM stands for Object Grid Mapping and its goal is to offer a full-fledged JPA engine storing data into NoSQL stores. This is a rather long blog entry so I've split it into distinct sections from goals to technical detail to future.