HOWTO: Optimize Apache for Low Memory Usage
Come calculations you can do to tweak your memory allocations, based on how much you’ve got available.
#optimization
MySQLTuner
Awesome perl script for getting tuning/optimization suggestions for a MySQL server.
Closure Compiler Service
JS minifier from Google. Nice UI for doing it, also has an API for doing it programmatically.
Mobile-friendly
Opera’s guide to mobile device optimization
Best Practices for Speeding Up Your Web Site
Best Practices for Speeding Up Your Web Site
“The Exceptional Performance team has identified a number of best practices for making web pages fast. The list includes 35 best practices divided into 7 categories.”
Optimize Apache for WordPress
Some pretty cool server tips for optimizing a VPS for running pretty much any web system, but specifically WordPress.
MySQLTuner.pl
Perl script that scans a MySQL install and suggests different settings that might be more optimized for its load profile.
A HOWTO on Optimizing PHP
Extensive tutorial on tuning PHP for performance on the system level (not just coding tips).
PHP Speedy
“PHP Speedy is a script that you can install on your web server to automatically speed up the download time of your web pages. Here’s an example, from a test page:”
PHP Quick Profiler
Neat “Firebug for PHP” profiler/debugger tool.