minor #16609 [Logging] Document the Monolog reset() method for long running processes (94noni)

This PR was squashed before being merged into the 5.4 branch.

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

Close #15086

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d949325 [Logging] Document the Monolog `reset()` method for long running processes

Author: OskarStark

logging.rst

@@ -381,6 +381,14 @@ 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 in-memory data can be cleared using the ``reset()`` method on a ``Monolog\Logger`` instance.
+This should typically be called between every jobs/tasks that a long running process is working through.
+
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