- A log message
- A context of the log message (f.e which user)
-If possible, a Logger should extend [`AbstractFriendicaLogger`](AbstractFriendicaLogger.php), because it contains additional, Friendica specific business logic for each logging call.
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-Using AbstractFriendicaLogger makes the logger capable of adding profiling data for each log call.
+If possible, a Logger should extend [`AbstractLogger`](AbstractLogger.php), because it contains additional, Friendica specific business logic for each logging call.