Recap

Over the course of this book we have covered quite a lot of stuff! We opened to an introduction on web servers: what they are, what they do, and what can cause them to have lower performance than expected. Following this we went through some of the many ways that people can improve the performance of their web server's through the use of things like cacheing. You also looked at content delivery networks and DNS load balancing, and learned the methods for planning performance and reliability.

The second part of the book covered load balancing for HTTP, databases, and SSL servers. Load balancing throughout these chapters was to find ways to not only improve the performance of your web servers but also all the other components that it depends on.