Pole Barn Question for people that built/build pole barns

[jpcajun]

I am about to build my pole barn myself... 30x50. I was originally going to sink my treated posts 4' deep and concrete around, build my barn and come back and frame for my slab and pour a cement slab in the barn. I have talked to several people and read up on this some and it seems as though the posts are rotting, even in the cement as the posts shrink and then holds moisture. I am thinking now of pouring concrete footings and using galvanized brackets to anchor into the footings and connect my posts to the brackets... that way my posts are not in the cement but right on top and are anchored to the footing.

Has anyone done this? Or what is your thoughts?