- From: Luigi Rizzo <luigi@labinfo.iet.unipi.it>
- Date: Thu, 11 Apr 1996 09:53:34 +0200 (MET DST)
- To: sjk@amazon.com (Shel Kaphan)
- Cc: http-caching@pa.dec.com
Perhaps a bit off-topic, but perhaps I have seen (and now lost reference to) some posting related to this on the list. Some caching protocols try to optimize the use of memory by determining which documents are more "popular" and pulling them towards clients, or pushing them away from servers. The popularity of a document is often if not always based on incoming requests. One difficulty with this approach is that once a document has been replicated elsewhere, and caching is effective, requests to the original source (be it the server or a proxy) are greatly reduced and this disturbs the protocol. Is there a way for a cache to provide feedback to the original source reporting access statistics for a given document ? Honestly I am not even sure if this is something that belongs to HTTP or not. On one side, traffic related to cache-management (not directly generated by clients' requests) probably should travel separately; on the other side, clients' requests may have so many side effects on caches that it might be easier to mix the two things. Comments ? Cheers Luigi ==================================================================== Luigi Rizzo Dip. di Ingegneria dell'Informazione email: luigi@iet.unipi.it Universita' di Pisa tel: +39-50-568533 via Diotisalvi 2, 56126 PISA (Italy) fax: +39-50-568522 http://www.iet.unipi.it/~luigi/ ====================================================================
Received on Thursday, 11 April 1996 08:58:09 UTC