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SLO Configuration
SLO Overview
Burn Rate Alert Configuration
Understanding Burn Rates
A burn rate measures how fast you consume error budget relative to the sustainable rate.
The standard 14.4x burn rate is designed to alert when 2% of your budget is consumed in 1 hour.
Formula: burn_rate = (budget% / 100) * (window_days * 24 / alert_hours)
For a 30-day window, to consume 2% budget in 1 hour: (0.02) * (30 * 24 / 1) = 14.4
(2%/1hr, 5%/6hr, 10%/3d)
SLI Simulator
Simulates a sudden, sustained drop from 100% to 98% SLI.
Time to fire = how long until the windowed average crosses the threshold.
Alert Timeline
Calculating...
Error Budget Consumption Over Time
Sample Size Analysis
For reliable detection, you need enough events that random variation won't mask real problems. We use the Poisson confidence interval heuristic: expect ≥10 errors at threshold for reliable detection (≥20 for stable alerting). See also: Google SRE Workbook on low-traffic alerting.