chapter  5
38 Pages

Caching and Load Balancing

In previous chapters in this book, our primary focus was upon understanding the bene›ts of content delivery; reviewing the relationships between Web servers, application servers, and back-end database servers; and examining how a content delivery provider, such as Akamai, structures its network and uses a markup language to facilitate data delivery. While our prior explanation of content delivery network (CDN) operations was of su¤cient detail to provide readers with a ›rm understanding of such operations, two key content delivery functions were glossed over. ose functions are caching and load balancing, both of which will be covered in more detail in this chapter.