Re: How to run a task continuously in the background

On 2019-07-17 12:34:41 +0100, Rory Campbell-Lange wrote:
> We make extensive use of postgresql 'contacting' an external process,
> but our use case involves many databases in a cluster rather than many
> schemas. Also we don't have to deal with cancelling the external
> process. We chose this architecture to avoid many postgresql
> connections for LISTEN/NOTIFY.
>
> We use a pgmemcache interface trigger to update memcached with a
> notification of the database holding items to be flushed.

Memcached is a cache. It will delete old items if storage is full (or if
they expire). Is this not a problem in your case or did you make sure
that this cannot happen?

hp

--
_ | Peter J. Holzer | we build much bigger, better disasters now
|_|_) | | because we have much more sophisticated
| | | hjp(at)hjp(dot)at | management tools.
__/ | http://www.hjp.at/ | -- Ross Anderson <https://www.edge.org/>