Track Rate, Errors, Duration. The minimum viable service dashboard.

What you're seeing

RED is the modern reduction of Google's four Golden Signals: Rate (req/s), Errors (errors/s), Duration (p99 latency). Three signals, one dashboard, catches most production issues.

Add saturation (USE: utilization, saturation, errors) for resource-bound systems.

★ KEY TAKEAWAY
RED: Rate, Errors, Duration. The three numbers every service dashboard must show.
▶ WHAT TO TRY
  • Click Start for baseline metrics.
  • Click Inject incident — watch errors spike and latency degrade.
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