PHP drives many of the highest trafficked sites on the web, but its ease of use and low barrier-to-entry makes it easy to fall into scalability and performance traps. In this tutorial we'll discuss a pragmatic approach to performance and scalability - balancing the desire to 'want to go fast' with shipping maintainable code in a timely fashion. In particular we'll discuss:

• Discuss fundamental concerns in building high performance and scalable web applications
• Identify "low hanging fruit" that can easily improve your applications
• Discuss the top 10 scalability myths and the truth behind them
• Analyze common application architecture design patterns and the problems they best address
• Learn how to make targeted improvements in legacy applications