Excerpts from Dimitri Fontaine's message of mar mar 06 18:44:18 -0300 2012:
> Josh Berkus <josh@agliodbs.com> writes:
> > Activity and discretion beyond that could be defined in PL code,
> > including run/don't run conditions, activities, and dependancies. The
> > only thing Postgres doesn't currently have is a clock which fires
> > events. Anything we try to implement which is more complex than the
> > above is going to not work for someone. And the pg_agent could be
> > adapted easily to use the Postgres clock instead of cron.
>
> Oh, you mean like a ticker? If only we knew about a project that did
> implement a ticker, in C, using the PostgreSQL licence, and who's using
> it in large scale production. While at it, if such a ticker could be
> used to implement job queues…
>
> https://github.com/markokr/skytools/tree/master/sql/ticker
Why do we need a ticker? Just fetch the time of the task closest in the
future, and sleep till that time or a notify arrives (meaning schedule
change).
--
Álvaro Herrera <alvherre@commandprompt.com>
The PostgreSQL Company - Command Prompt, Inc.
PostgreSQL Replication, Consulting, Custom Development, 24x7 support
