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Monday, June 20, 2011
Knowledge Layer :: What does serial / refresh / retry / expire / minimum / and TTL mean?
Knowledge Layer :: What does serial / refresh / retry / expire / minimum / and TTL mean?: "The mechanism devised provided that when a DNS resolver (i.e. client) received a DNS response, it would cache that response for a given period of time. A value (set by the administrator of the DNS server handing out the response) called the time to live, or TTL defines that period of time. Once a response goes into cache, the resolver will consult its cached (stored) answer; only when the TTL expires (or when an administrator manually flushes the response from the resolver's memory) will the resolver contact the DNS server for the same informatio"
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