3 ms·
ALIAS isn’t well supported because it isn't a real record. It’s a pseudo-record i.e. it’s not officially recognized by any RFC afaik. This could have subtle con
by CSSer 4y ago
ALIAS isn’t well supported because it isn't a real record. It’s a pseudo-record i.e. it’s not officially recognized by any RFC afaik. This could have subtle consequences in the situation you’re describing. It adds an extra external lookup to your request, decreasing performance[0].
[0] https://help.ns1.com/hc/en-us/articles/360020248973-About-CNAME-ALIAS-and-linked-records https://help.ns1.com/hc/en-us/articles/360020248973-About-CN...
- duskwuff 4y ago> It’s a pseudo-record i.e. it’s not officially recognized by any RFC afaik. It goes beyond that -- "ALIAS" isn't a DNS record at all; it does not exist as an entity within the DNS protocol. It's a directive used by some DNS servers (primarily at large providers) which causes the DNS server to synthesize A/AAAA records.