Everybody knows that when students start a new quiz with random questions the server's load increases too much (cpu/DDBB).

If the quizzes where generated several minutes before (for instance 5 minutes) the quiz start date/time, this will reduce the impact.

So, when students enter the quiz, they take one of this generated quizzes.

Taking in account several aspects:

• The quiz couldn't be modified 5 minutes (or whatever) before the start time.
• The time the quiz is blocked can vary depending on the number of random questions (maybe 10s per random question?)
• Start time can't be less than now()+"quiz blocked time"

Sure there are more aspects to take in account.

Does this makes any sense?

Thanks