DNS keeps showing up in outage postmortems, but what's often missing is discussion about recovery, not just prevention.
In this post, I break down common DNS failure patterns (TTL propagation, resolver overload, control plane dependency loops) and why recovery can deadlock when your tooling itself depends on DNS.
I'd love to hear how others design around this:
Do you use DNS-independent fallbacks?
Static seed lists?
Separate control plane resolution?
Aggressive caching vs short TTLs?
Curious what patterns have worked (or failed) in real systems for folks.
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[ 1.9 ms ] story [ 10.6 ms ] threadIn this post, I break down common DNS failure patterns (TTL propagation, resolver overload, control plane dependency loops) and why recovery can deadlock when your tooling itself depends on DNS.
I'd love to hear how others design around this:
Do you use DNS-independent fallbacks?
Static seed lists?
Separate control plane resolution?
Aggressive caching vs short TTLs?
Curious what patterns have worked (or failed) in real systems for folks.