The function you're using will interrupt the normal session function and insert your code in to act, then carry on with other internal functions.
Really this is not the answer to your question, but if you need really high availability I can suggest that storing sessions in mysql is not a good method.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.