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آقای meysam22us درست گفتن بالا بردن زمان کشینگ ممکن هست که در آینده باعث به روز نشدن اطلاعات بشه.
این هم درباره dns caching صادق هست و هم درباره http
درباره caching dns در آیزا هم ttl و زمان caching اینگونه حساب میشه:
When ISA Server retrieves an entry from the DNS cache, it checks the time-to-live
(TTL) on the entry. If the TTL has expired, ISA Server removes the entry from the
cache. ISA 2004 uses the TTL given by the DNS server. However, if the TTL is fewer
than 6 minutes, it is changed to 6 minutes; if it is more than 6 hours it is changed to
6 hours.
■ When the cache size reaches the maximum threshold defined by the DnsCacheSize
registry setting, 25 percent of the entries will be removed from the cache, according
to the ones whose TTL is earlier. By default, the DNSCacheSize is set to 3000.
■ The firewall service also traverses the three caches once every 30 minutes and
removes cache entries whose TTL has been reached.
برای اطلاعات بیشتر به فصل 6 کتاب آیزا سرور Implementing ISA Server Caching مراجعه کنید
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