[orf]

> Of course the downside of low TTLs is more queries

I was diagnosing a networking issue from one of our service providers last Friday. For whatever indeterminate reason DNS responses from R53 took upwards of 10-15 seconds to return. While I appreciate the non-configurable default TTL of 60 seconds for ELB is not plucked out of thin air and that actual issue seemed to be on the service providers side, the lower limit seems far too low for medium/high latency networks. I wish it was configurable.

What's worse is it looks like it's our site that is the issue, so we get the complaints and I have to dig through wireshark logs.

[colmmacc]

If you have a very high latency network, say a satellite link, make sure that your near-side resolver supports pre-fetching! Unbound is a good choice.

[jniedrauer]

I run unbound on my own workstations. It's so lightweight, you'd never even notice it, but it definitely makes browsing a little more snappy.