Great presentation. Started off with a not-too-deep dive into the inner workings of Doctrine. Based on that knowledge, different strategies for optimization were presented. I was familiar with most of them. The L2 cache stuff was new for me, and it was well explained. Everything was explained with examples, which was really practical. Maybe cut back a bit on the amount of examples in the beginning. I had the feeling they slowed a little bit down. But only in the beginning. Once the examples were re-used to dive deeper into the performance improvements, the pace picked up again.
Nice trigger. Didn't use Symfony up to now but will for sure look into it.
Professional presentation with many great examples.
However a little bit to heavy for me as I'm neither knowing nor using Doctrine :)
A nice introduction to a new PHP library including a nice CoP.
Enjoyed the real Flemish :)