Jordan Deitch <jwdeitch(at)gmail(dot)com> writes:
> I would like to remove records from a time series table older than a
> certain age. My understanding of current standard practice is to configure
> an external scheduler like cron to perform the deletion.
> My proposal is to allow clients to register functions on the tail end of
> the autovacuum sequence.
There's already a mechanism for writing custom background workers.
I doubt that adding random user-defined stuff to what autovacuum has
to do is a better idea; that will mostly make autovac scheduling even
harder than it is now.
regards, tom lane