Caching/Proxy Infrastructure
Much of the Web's content is cachable
But much less is cached than could be cached
And caches are at the periphery of the network, with clients already doing aggressive caching with the result you'd expect: poor hit rates
Caching should be throughout the network
Proxies may add value
Performance
Cost
Security (all corporate, and much ISP access is through proxies, which may or may not cache)
Annotation
Transformation of content (e.g. WebTV, AOL)
Jim Gettys
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