On the About:Performance site today there's a new post (part two in the series, part one is here) about increasing the performance in your PHP application. In this new post he talks about a few other updates that can be made to make your app fly.

In the first part of my blog I covered the data side of the tuning process on my homegrown PHP application Spelix: database issues, caching on both the server and the client. [...] In this part, I will concentrate more on technical topics: network traffic, code caching and session handling.

The post shares helpful tips and code examples showing how to:

• Reduce Network Traffic
• Leverage Browser / CDN cache
• Use Conditional and Non-Conditional Caching
• Using the HTML5 Application Cache
• Optimize Session Handling

He does suggest the use of a commercial tool for a more in-depth analysis, but there's nothing here that it's required for. A little poking around in your browser can yield most of the same results.