Re: Taxonomy draft - web replication problems

From: Martin Hamilton (martin@net.lut.ac.uk)
Date: Tue Aug 24 1999 - 04:19:46 MDT


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Patrick McManus writes:

| in my mind the difference between a cache and a mirror is that in the
| cache scenario the cache is responsible for enforcing expiration
| information (do I serve my copy or do I get one from the origin
| server?), and in the mirror scenario the origin server is responsible
| for changing the mirror's copy when appropriate, the mirror never
| makes an expiration decision.

Perhasps also worth bearing in mind that some technologies blur the
cache/mirror distinction - e.g. Akamai's FreeFlow and Sandpiper's
Footprint.

Cheers,

Martin

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