This is an article of mine, originally published on Wazi
WordPress , the popular content management system (CMS), is easy to configure and use, and is well supported by its community of professional consultants. WordPress depends for its operation from a full stack that includes an operating system, database, web server and PHP. If you can optimize this stack, you can improve the performance of your site. Here are some tips and best practices for a configuration that can improve performance without forcing a hardware upgrade.
In the first part of this guide we have seen what to check and modify in the operating system and database server (mysql)
In the second part I have presented the instructions to set the http server (Nginx to be exact) and PHP .
Today we will see APC, the configuration of WordPress and Varnish.