Know Thy Enemy: How to Prioritize and Communicate Risks
summary
CRE/Customer Reliability Engineering builds a simple spreadsheet that converts each risk into expected cost by multiplying estimated frequency (ETBF) and impact (ETTR broken into ETDT and ETTR), adds percentage of users affected, and reports minutes per year against an error budget (e.g. 99.99% ≈ 52 min/year, 99.9% ≈ 525 min/year). Cells are color-coded and interactively accept risks; any single risk consuming *>25% of error budget is marked unacceptable. The tool yields objective ranked priorities and supports data-driven SLO tradeoffs.
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chapters (24)
- 0:00Intro
- 0:14New Zealand
- 2:18What is risk
- 2:31Definition of risk
- 2:49Service Level Objectives
- 4:06Risk Definition
- 4:30Risk Observations
- 4:40Thought Exercise
- 8:40Risk is a good thing
- 10:04Ignoring risk
- 10:58Being paranoid about risk
- 13:18Managing risk
- 14:20Controversial
- 14:51Intuition
- 18:02Process
- 18:53Risk Characteristics
- 19:28Prioritize Risks
- 21:40Expected Cost
- 25:42Risk Register
- 26:58Risk Estimates
- 29:23Spreadsheet
- 29:41Stack Rank
- 30:28Reliability
- 34:11Summary
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