Take a look at datomic, it uses datalog.

Seems awesome from the outset. I especially like "Datomic stores all history, and lets you query against any point in time."

I am very curious about your experience. Could you provide some more details?

Is the "little tutorial" available somewhere? I'd be interested in working through it.

I'm so excited about all the error messages work on this release! Also, the new metadata and tap functionality creates so many possibilities. And Java 8 minimum guaranteed so we can build things on top of java's time libraries and trust they will be there.

Nice work everyone!

The development feedback loop is incredibly tight when using a clojure (or lisp in general) repl. The interactivity lets you interactively develop your code, including ( it appears) the C/cuda code since you can call out to compile it at the repl and then upload it to the GPU for execution.