Cache Array Routing Protocol
The Cache Array Routing Protocol (CARP) is used in load-balancing HTTP requests across multiple proxy cache servers. It works by generating a hash for each URL requested. A different hash is generated for each URL and by splitting the hash namespace into equal parts (or unequal parts if uneven load is intended) the overall number of requests can be distributed to multiple servers.
Implementations include Apache Traffic Server, Squid (software) and the Microsoft Internet Security and Acceleration Server as well as F5 Networks BIG-IP devices.
Sources and credits
This article is adapted from the Wikipedia article “Cache Array Routing Protocol”, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.
Images, from Wikimedia Commons:
- HTTP logo.svg by IETF HTTP Working Group (HTTPbis), Public domain
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