Scalability resources

I found this resources:

High Scalable Architecture:
- YouTube Architecture
- Facebook Chat Architecture
- Amazon Architecture

Blogs:
- Scalability Guidelines for building scalable software system (part 1)
- Scalability Guidelines for building scalable software system (part 2)
- Scalability Guidelines for building scalable software system (part 3)
- Scalability Worst Practices
- how to minimize load time for fast user experiences
- Scalability principles
- Challanges for Developing Enterprise Application on the Cloud
- high-performance web page real-world examples netflix case study
- Intro to Caching,Caching algorithms and caching frameworks part 1
- Amdahl’s low
- How I Learned to Stop Worrying and Love Using a Lot of Disk Space to Scale
- Top 25 Most Dangerous Programming Mistakes