@Marvin what's the recommended way for removing old log entries written by Prefect in a PostgreSQL database?

The Prefect documentation and other sources don't provide a straightforward guideline for removing old log entries specifically from a PostgreSQL database used by Prefect. However, a general approach to handling large amounts of log entries in PostgreSQL is to use partitioning. Partitioning involves splitting up a large logical table into several smaller physical tables, which can improve performance and simplify the management of old data. While this doesn't directly answer your question about deleting old log entries, it's a common strategy for dealing with large tables in PostgreSQL, which Prefect log tables can become over time. This blog post Database Partitioning Prod Postgres Without Downtime can give you a starting point on how Prefect team approaches partitioning in PostgreSQL. To remove old logs, you would typically create a maintenance script or cron job, along with retention policy to determine which logs are old and eligible for removal. This script would likely use

DELETE

or

TRUNCATE

statements to remove data from these partitions that are past a certain age. As always, before you perform deletions or any database maintenance tasks, make sure to backup your data and thoroughly test your cleanup procedure in a safe environment to avoid any unexpected data loss. For the most up-to-date and specific information, you should consult the Prefect community or support channels.