just a question...

greetings SQUIDers!
        
i just want to ask something in regards with this figure:

   THE INTERNET

         /\
         ||
    +---------+
    | proxy-A | parent of proxy-B <-------- international proxy
    +---------+
         ||
    +---------+
    | proxy-B | parent of proxy-C <-------- national proxy
    +---------+
         ||
    +---------+
    | proxy-C | <------------------------- client's proxy
    +---------+
        ||
      browser <-- pointed @ proxy-C

a browser queries proxy-C for an object, but not found, proxy-C sends a query to
proxy-B since it is his parent. the question is, what will happen if the object
is not found in proxy-B, will:

[1]proxy-B will fetch the object to the source(DIRECT) and cache it, deliver and
cache it to proxy-C, then to the browser?

[2]or send another query to proxy-A and let proxy-A fetch the object DIRECT and
cache it, deliver and cache to proxy-B, then to proxy-C, then to the browser?

anyone like to comment?

TIA!

Leo.

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Received on Wed May 07 1997 - 15:27:13 MDT