October, 8 I did master-class about catching error in SQL application at PHPConf 2009. Who speaks Russian can get slides here: pdf and odp.

There were several things which were interesting for me during my talk.

First is interaction with audience of different educational (or better to say MySQL practice) level. I should make a note for feature how to solve moments when 1/3 of audience listens carefully and is just right for the talk, another 1/3 knows things I am talking at the moment already and last 1/3 needs explanations of basic things such as what is difference between table-level and row-level locks. Probably I should create list of things user should know before attend the talk.

It was surprising how many people don't use SHOW ENGINE INNODB STATUS and InnoDB Monitor! And I had very little information about these topics in my talk.

Last thing was my expectation about classroom with desks and people with laptops on it. I saw no desks and 1-2 laptops for more than 50 people. Next time I should create interactive program without need of laptop. Like quiz or so.