2026-01-14 · Elena Park
Telemetry That Routing Engineers Actually Open
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Pick counters that answer yes/no questions first: is the session stable, is churn abnormal for this hour, did we deploy near the spike? Layer detail only after the first screen.
Sampling windows should survive jittery Wi-Fi on call bridges—avoid charts that need perfect refresh rates.
Write the hypothesis beside the graph screenshot in tickets. Future you will thank present you.
Routing Telemetry Signals Primer students submit a capstone narrating a synthetic incident from graphs alone—no CLI peeking until minute twelve.