>>/705734/
Hey, admin, I have an idea of the board engine improvement that will make this spam/flood impossible.
I will explain it in /operate/
Are you interested?
It will require some modifications to the engine itself and also to the DB structure

In short: token mining. Each poster before he can post should solve a resource-expensive algorithmic problem that is hard to solve but easy to check. Once the problem is solved, the user gets a token that allows him to post. Tokens are saved in a standalone table, and each token can be revoked at any time by the moderator, so the flooder has to solve the problem again to get a new token.
The complexity of the problem can be adjusted by the moderator, so during intense flood it can be somnething like "1 day at 16-core CPU"