Posts Tagged ‘cname’

DNS time-to-live settings for CNAME records

Monday, May 10th, 2010

CNAME sounds like something worth looking into …

The DNS CNAME is one of the most versatile tools in an IT administrator’s arsenal. One caveat to reaching the full potential of a CNAME is default TTL. IT pro Rick Vanover explains situations to lower the default TTL.
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I’ve long thought that the DNS CNAME is one of the most underrated infrastructure technologies considering it has been available for a very long time. Simply put a DNS CNAME is an alias record that points a user-created fully qualified domain name (FQDN) to an existing FQDN. I did a post a few years ago how using the CNAME for a database’s ODBC connection is a great way to accommodate a server move without touching the application or server.

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