Proper queuing in RDBMSs can be tricky. 2ndQuadrant has a good write up of what is required to make sure you don't fall into any traps: https://blog.2ndquadra

Proper queuing in RDBMSs can be tricky. 2ndQuadrant has a good write up of what is required to make sure you don't fall into any traps: https://blog.2ndquadrant.com/what-is-select-skip-locked-for-in-postgresql-9-5/ https://blog.2ndquadrant.com/what-is-select-skip-locked-for-... Now if we're just talking about persisting data to somewhere - postgres COPY is pretty amazing.