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Network L5 NETWORK-020 · 24 min

The CDN cache is fine, but a TLS version difference with the origin fails only miss requests

A situation where most requests are cache hits and look fine, but origin communication breaks only in the cache-miss segment.

NetworkPlatform ReliabilityLevel 5Pro24 min
Scenario

A scenario that narrows down the root cause, centered on checking the cache-hit path and the origin fallback path separately, in the situation of the CDN cache being fine but a TLS version difference with the origin failing only miss requests.

What to check first
  • Identify the primary failure signal in the Origin Connectivity scenario.
  • Separate visible symptoms from the underlying technical dependency.
  • Describe the safest recovery path and the follow-up prevention work.
Checking checklist
  1. Summarize the current impact and the last known change.
  2. Collect direct evidence from logs, runtime state, and configuration before changing anything.
  3. 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
Should I translate commands, logs, or product names?

No. Keep commands, logs, file names, APIs, and product names unchanged, then explain the reasoning in the selected UI language.

What should the answer focus on?

State the root cause, the evidence that supports it, and the safest recovery direction.

Why can the scenario remain in the original language?

The source scenario is treated as an incident artifact. Guidance, checklist, hints, and explanations can be localized around it.