Please see this forum post for background:

https://moodle.org/mod/forum/discuss.php?d=380209

The Moodle log store does not seem like the best place to log operational (non activity based) information.

By operational information I mean things like:

3rd party API call attempts / success / errors

Configuration errors noticed during scheduled tasks

Web-service failures

A PHP PSR based logger would be ideal for logging operational items as it is possible to attribute a level to each item - e.g. info,debug,warning,error,critical

This means it is possible to filter the logs easily by level OR configure the logging sensitivity - i.e. only log things that are warnings, errors or critical.