System Design
Advanced
SLO and Error Budget Math
Convert reliability goals into measurable budgets, alerts, and launch criteria.
45 min
3 sections
slo
error-budget
reliability
1
2
3
01. Start with user-visible promises
Section 1 of 3
An SLO should describe the reliability users experience, not just host health. For a support platform, useful SLOs might be API request success, ticket assignment latency, webhook processing freshness, and search availability.
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Example SLOs:
- 99.9% of ticket detail requests succeed monthly.
- 99% of ticket assignments complete within 2 seconds.
- 99% of provider webhooks are processed within 60 seconds.
- 99.5% of audit export jobs complete within 15 minutes.Back to Course