Visvanath Ratnaweera

When your wagon gets slower, you can give more gas or halt the wagon and investigate the cause.

Hint: It can't be Apache, which was there before the server slowed down.

WiseCat says:

Upgrading to 5.1 and a sneak peek of the new features
https ://www.youtube.com/watch?v=pgGwmLIBRFw (remove the blank, 5.1 starts at 14:20)

 

Assuming that the compulsory PHP Configuring the Router in 5.1 may have an influence,

 

https ://www.youtube.com/watch?v=--bzkEf5uxk

AFAIC it is not about the _handling_ of versions, it is about the idea of versioning altogether. For a one-man show like some other speakers here, it might be a small thing, but not for an education institution in the tertiary sector with a couple of hundred teachers. At one time I had close to 3 million questions due to the infamous duplication of questions problem - I know, it is not the same problem. Still somebody reported a site with 10 million (duplicate) questions. I don't want to think of the number of question versions in them!

Just venting, I know that the versioning is more important for the HQ than cleaning the mess the duplication problem has made - and still making - in the users' sites. At least it boosts the industry as people need more and more powerful severs (to keep junk afloat).

There are many things involved.

a) Delete "random" questions
This has been known/warned since a long time. It is a pre-condition for this discussion.

b) Delete old "ghost" questions (not "random" questions)
Obviously they need to be deleted. Doing it on the Moodle web GUI is the safe way. But if you have hundreds of thousands of them, or even millions as some do, you need to do it directly on the database, which is a scary thing. There are various solutions popping up, but I haven't tried them, don't have the time/energy to do it during the running semester.

c) Stop new "ghost" questions arriving
Certain bugs have been fixed. Still it happens as you have already experienced. I believe it depends on the workflow and the constellations of question banks. I'm talking of Moodle 4.x. I don't think there is a general receipe. If there are any, please report!

I don't know. If Moodle throws errors, it does so even outside service windows.

 

You mean, you can't let the errors display on users' browsers. You don't have to: for that there are logs in the machine.