05 DNS Resolution Failure
failed · run 2026-08-16 03:00 UTC
Time to first impact
T+0 to 30s. first impact at 4s.
What was injected
DNS Resolution Failure — nothing was injected: this is the worked example
What happened
cascade: auth at 4s, gateway 502 at 8s
Impact
| time to first impact | 4s |
| time impaired | 26s |
Remediation
- Cache resolved names for their TTL and keep serving the last good answer when the resolver fails; a lookup per request is a dependency per request.