Chapter 6. Server Load-Balancing Overview

This chapter covers the following topics:

• Definition of load balancing

• Key concepts of load balancing

• Planning for high availability

• Generic load-balancer architecture

This chapter discusses concepts related to server load balancing. The term content switching is analogous to server load balancing. The capabilities of a content switch are considered to be a superset of the capabilities of a server load balancer. The main difference is the capability of a content switch to perform load balancing based on information beyond Layer 3 or Layer 4, such as an HTTP URL or an HTTP cookie. In this book, the term load balancer covers devices known as content switches and as server load balancers because ...

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