Chapter 10. Cache Array Routing Protocol (CARP)

The cache array routing protocol allows a group of proxies to work together and act as one logical cache, this is accomplished by using an algorithm that combines the proxy hostname and requested URL to produce a number, the request is then forwarded to the proxy with the highest number. For this to work properly, the Hostname option in the general section must be the same as the hostname other proxy servers use to forward requests to this proxy. This feature overrides Internet Caching protocol, and is compatible with squid.