Hi all,
since we just stumbled over a very high webserver load during the start
of the semester on one of our platforms (ILIAS 8) I want to make sure
that you are aware of this issue:
If the notifications in "Administration -> Communication ->
Notifications" are enabled please make sure that your "Refreshinterval"
is big enough (a recommended value would be 60000 (which is 60s in ms)).
Otherwise you might receive a kind of ddos by your users' browsers if
the notifications route is not rate limited :-)
I hope that will help someone. Thanks @mjansen for the hint.
Best regards,
Rob
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Rob Falkenstein
Abteilung E-Learning
Rechenzentrum der Universität Freiburg
Hermann-Herder-Strasse 10
D-79104 Freiburg i. Br.
Tel: 0761 - 203 - 67780
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