I agree that using a traditional DB as a queue has it's pitfalls, but it also has great benefits with regards to consistency, reliability and simplicity. If I

I agree that using a traditional DB as a queue has it's pitfalls, but it also has great benefits with regards to consistency, reliability and simplicity. If I was building a new system that required a queue I'd definitely put in the same postgres db as the rest of the data until I had a good reason not to.