Good to see my friend (and former co-worker, twice) Eli White, make HN.
Though I think (without looking at the slides in five or six months) I can summarize. Cache with APC and Memcached. Use versioning and aggressive caching for static resources. Be careful about fields and field sizes in mysql, and use Innodb.
Look guys, I know slides are cool for some (I hate them), but watching a hundred slides is a PITA instead of one single web page (or two) with the same information which makes it more digestable and easier to get the important tidbits.
In short, slides suffer from the same shortcomings of video.
Though I think (without looking at the slides in five or six months) I can summarize. Cache with APC and Memcached. Use versioning and aggressive caching for static resources. Be careful about fields and field sizes in mysql, and use Innodb.