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batz107

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Apr 13, 2010, 12:06:33 PM4/13/10
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בשאלה ה-2 בבוחן 2
כאשר הארנב מבקש את האובייקטים מהפרוקסי, הפרוקסי אמור לפנות לאתר
אינטרנט ולבדוק שהם לא השתנו ? בתשובות אין התייחסות לכך
כמו כן, האם הפנייה לאתר אינטרנט ע"י הפרוקסי לשם הבדיקה אם חל שינוי
נעשת מעל
UDP or TCP ?
תודה

yaron winter

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Apr 13, 2010, 12:20:59 PM4/13/10
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Hi,

(1) It's a matter of configuration whether the HTTP proxy verifies validity with the server or trusts its TTL. In principle, what makes the WEB cache effective is that many clients access the same data, thus avoid going to the server, which means that the WEB cache can indeed trust its TTL. In our case, it was emphasized the the cache is very fresh.

(2) The verification (i.e. conditional GET) is done over HTTP, of course.

Best.

2010/4/13 batz107 <bat...@gmail.com>

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batz107

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Apr 13, 2010, 1:17:35 PM4/13/10
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thx

Haya Shulman

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Apr 13, 2010, 7:07:00 PM4/13/10
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1. I omitted this from my solution since many did not do this, and
thus we did not reduce points for this, but of course, the rabbit
should query with if modified.
2. Yaron is correct, communication is over HTTP which runs on top of
TCP.

On Apr 13, 8:17 pm, batz107 <batz...@gmail.com> wrote:
> thx

Moshe Lezerovitz

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Apr 15, 2010, 3:44:56 PM4/15/10
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IF MODIFIED זה לא QUERY שהפרוקסי צריך לשאול את השרת(ישר אחרי שהארנב מבקש את האובייקט)?

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