I hadn't heard of this but it looks cool. Looks like something that will do the job when we do need it. so far we just store the parameters from certain heavily used mutations into a job table and run the actual insertion in a background worker. We're no where near needing this yet but it'll be good to have it on hand when we (hopefully) get to that point.
As your using postgres have you looked at citus[0] at all?
[0] https://github.com/citusdata/citus