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re: Explain DNS TTL Like I'm five VIEW POST

FULL DISCUSSION
 

If you lower the TTL DNS servers will have to refetch your entry more often from 'upstream'. So getting the address could take a little longer.

From Wikipedia

The Domain Name System is maintained by a distributed database system, which uses the client–server model. The nodes of this database are the name servers. Each domain has at least one authoritative DNS server that publishes information about that domain and the name servers of any domains subordinate to it. The top of the hierarchy is served by the root name servers, the servers to query when looking up (resolving) a TLD.

Edit: emphasis changed

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