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VOOZH | about |
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VOOZH | about |
The system of domain name servers (DNS) is a global hierarchy of databases dedicated to the simple but essential task of looking up host names like www.digitalocean.com and turning them into one or more IP addresses. Whenever an email is sent or a connection to a host is initiated by its name, the DNS system is used. There is a good introduction to the DNS system available from the DigitalOcean community.
Such an essential and fundamental component of Internet infrastructure gets a lot of use. It is not uncommon for a busy system to make hundreds of name lookups per second or more. If services running on your server perform much work at all behind the scenes then it is likely that security and performance will benefit from verifying and caching within your own systems the name lookups that your service performs to conduct its operations.
In this tutorial, you will learn how to set up a FreeBSD server to remember all DNS lookups in a system-wide cache. Information will automatically expire from this cache, honoring each looked-up domain’s individual policy for rechecking.
Note: As of July 1, 2022, DigitalOcean no longer supports the creation of new FreeBSD Droplets through the Control Panel or API. However, you can still spin up FreeBSD Droplets using a custom image. Learn how to import a custom image to DigitalOcean by following our product documentation.
Thanks for learning with the DigitalOcean Community. Check out our offerings for compute, storage, networking, and managed databases.
FreeBSD sysadmin and community member.
former DO tech editor publishing articles here with the community, then founded the DO product docs team (https://do.co/docs). to all of my authors: you are incredible. working with you was a gift. love is what makes us great.
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