Domains: DNS Time To Live (TTL)

DNS records, including A records, MX records, CNAME records, and more, all have TTL values set by the domain owner or DNS provider. The TTL value is measured in seconds, and it tells DNS resolvers and servers how long they can cache a DNS record before they need to fetch a new copy. The shorter the TTL value, the more often DNS resolvers will check for changes to a DNS record, and the longer the TTL value, the less frequently they will do so.

Setting a low TTL value can be useful if you anticipate making changes to your DNS records frequently, as it ensures that the changes are propagated more quickly. However, setting a very low TTL value can also increase the load on your DNS server, which can cause slower response times.

Setting your TTL value to an appropriate duration is recommended based on your needs and the likelihood of DNS record changes. Most DNS providers allow you to adjust the TTL value for your domain’s DNS records, but it’s important to be aware of the impact that changing the TTL value can have on your DNS server’s performance and the accuracy of your DNS records.

Additional Information

• Domains: Domain Nameservers

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