RethinkDB got my attention last year when introducing its changes command which basically provide what could be called “trigger subscription” as a way to subscribe to change notifications in the database.
The 2.0 sounds promising but still requires some testing
We’ve released RethinkDB 1.3 which has a large number of enhancements, and adds support for OS X and several other platforms. As of the 1.3 release, the server can now be installed on the following platforms:
OS X Lion and above (>= 10.7)
32-bit and 64-bit Ubuntu Lucid and above (>= 10.04)
Porting to OS X was one of the most requested features, and allows OS X users to try RethinkDB without installing a Linux VM. The story of long and arduous adventure of overcoming the many differences between the Darwin and Linux kernels and their surrounding environments remains to be told by @srh.
The 1.3 release involved closing sixty-nine issues over five weeks, including twenty-five bug fixes, ten enhancements, and thirty-four general improvements. A number of community projects based on RethinkDB have started in the past month, so we’re kicking off a community projects wiki with various contributions from community members including C, Haskell, and Go client drivers, example code, and portability recipes.
Download the latest release, and check back soon for more cool stuff!
RethinkDB is built to store JSON documents, and scale to multiple machines with very little effort. It has a pleasant query language that supports really useful queries like table joins and group by, and is easy to setup and learn.