hi dear friends;
i have a dedicated server having 1Tb Hd ,16Gb RAM 4cpus. i have installed moodle 3.7 recently and I noticed that during the quiz with 60 users only it shows me an error " database is overloaded or not running properly " then i guessed that this is the problem related to mysql tuner. now i have run the mysql tuner and i got the recommendation from mysqltunner; I have attached a screen-shot of recommendation.
My ist question is that should I change all the parameters that is recommended by mysqltuner?
2nd question is in recommendation, it shows that " query_cache_size (=0). what does mean of this?
3rd question, should i change the parameter without sequence or sequence is recommended?