I'm replacing my deck. I would like to use a flush beam (same level as joists) at the edge opposite the ledger because I plan to put a roof over it and I can put the roof posts right on top of the posts holding up the deck, which will be at the edge. My question is how should I handle the corner notching? Both the beam and the joists on the sides will be doubled 2x10's. If I notch the post in both directions there will be hardly any post left. See the first picture. This is what was done in the past and the beam was simple nailed to the post. I plan on bolting them, like in the second picture of a non corner post.
Old corner post:
A new post which is how I plan on doing it in the future: