I'm wondering what would be the best type of table for the arrowchat where all the messages are stored. I was thinking since it's a lot of inserts, then innodb would be optional. I was also thinking of switching it to a MEMORY table since message history isn't important to me. My question would be, what table type would performance the best(to reduce server load), MyISAM, Innodb, or MEMORY?
Note, that I have no need for keeping records of messages. Also, I run a cron job once a week to keep my table under 100k rows.
Thanks.