Several remarkable considerations, which is always good to be reminded about. Always nice to learn about real world experience also.
Hint to conference organizers (not just PHPDay): make sure this guy's in your lineup. Always delivering great content and engaging people. Seriously, if you don't accept one of his talks ...you then have no alibi! ;-)
Interesting how Postgres evolved... but the talk omitted quite a lot of relevant information.
Really disappointing how the speaker forfeit to fully answer some questions.