Re: How to run a task continuously in the background

Creating a background worker that invokes a stored procedure once per
second? <https://www.postgresql.org/docs/11/bgworker.html>
But this is not so simple to put in place.

It's not really important that the job runs once a second, but that it starts immediately when I want it to.
If I start a job with pg_cron, it will not be executed until the next full minute at the earliest.

Otherwise pg_cron with a function that performs a pg_sleep of one
second in a loop.

Anyway, it seems to me you are better refactoring your solution: it
seems you need to process data when _new data_ comes, not once per
second, so it sounds to me like a trigger could solve the problem.

The processing of the data via a job is deliberately chosen so as to separate the insertion of the data from their processing.
If a trigger were to do this, the transaction in which the data is inserted would take longer. This is not intended.
It is common for many records to be inserted in a short time, but processing takes a little time. The application that inserts the data should however not be slowed down.

Dirk
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Dirk Mika
Software Developer



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