I was trying to find online some exercises to practice scaling techniques (memchached, SQL Optimization, sharding dbs), but I could only find descriptions of these techniques, not any project on which to try them.
This link with slides on scaling techniques, is an interesting one, as it sums up some tools to achieve scalability quite well.
Is there a projecteuler kind of site for these kind of activities? Or at least some excercises (such as a downloadable ASP.NET/PHP site with obvious slowdowns, concurrency issues, subtle bugs) for people to try and learn how to fight this issue?