Scenario
The Service exists now, but one resolver path still trusts the earlier negative cache result.
Node-local DNS cache serves NXDOMAIN for a Service that was created moments later, and one node keeps the bad answer through the rollout
The Service exists now, but one resolver path still trusts the earlier negative cache result.
What to check first
- Identify the primary failure signal in the Negative Cache Outlives Reality scenario.
- Separate visible symptoms from the underlying technical dependency.
- Describe the safest recovery path and the follow-up prevention work.
Checking checklist
- Summarize the current impact and the last known change.
- Collect direct evidence from logs, runtime state, and configuration before changing anything.
- Separate immediate recovery from permanent prevention work.
Recovery and prevention
Choose the smallest safe recovery action first, then record the prevention work that reduces repeat incidents.
Questions worth viewing together
No. Keep commands, logs, file names, APIs, and product names unchanged, then explain the reasoning in the selected UI language.
State the root cause, the evidence that supports it, and the safest recovery direction.
The source scenario is treated as an incident artifact. Guidance, checklist, hints, and explanations can be localized around it.
Similar cases seen in the field