December 2001
Intermediate to advanced
400 pages
12h 2m
English
Content preview from Web Caching and Replication
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5.3. Request Redirection
Other HTTP features important for caching and replication are its mechanisms for redirecting a request from one server to another. A server may redirect a request to a proxy cache or a mirror server, or it may notify the client of the set of proxies and mirrors that can service the request. HTTP servers implement request redirection by returning a response with special redirection status codes. The main redirection status codes are shown in Table 5.4.
A server can use a response with the "300 Multiple Choices" status code to provide a client with a list of locations that can satisfy the request. The locations and their characteristics are specified in the entity portion of the response.