[Logging] Document the Monolog reset() for long running processes

Close #15086

Author: 94noni

logging.rst

@@ -367,6 +367,13 @@ information to your log entries.
 
 See :doc:`/logging/processors` for details.
 
+Handling logs in long running processes
+---------------------------------------
+
+During long running processes, logs can be accumulated into Monolog and cause some buffer overflow,
+memory increase or even non logical logs.
+Monolog supports to be reseted via the ``reset()`` function, this allows to empty the log pool.
+
 Learn more
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