I've had a very good experience with pg queuing. I didn't even know `skip locked` was a pg clause. That would have... made the experience even better!

I am afraid I've moved to a default three-way architecture:

- backend autoscaling stateless server

- postgres database for small data

- blobstore for large data

it's not that other systems are bad. its just that those 3 components get you off the ground flying, and if you're struggling to scale past that, you're already doing enormous volume or have some really interesting data patterns (geospatial or timeseries, perhaps).