Unrelated to the author's post, but for LetsEncrypt TXT records (to have wildcard SSLs), I've always set the TTL very low (in the 1-2 minutes or so range). This

Unrelated to the author's post, but for LetsEncrypt TXT records (to have wildcard SSLs), I've always set the TTL very low (in the 1-2 minutes or so range). This is because when I renew SSLs, I don't want to wait for DNS caching of those TXT records to resolve all over the Internet. I think that doesn't really affect anything traffic-wise. Just a thought I had in mind reading the article.