The Metrics You Need for Effective Incident Reviews
Incidents will happen. Even the most robust architecture has its weak points. When production breaks, everyone from customers to executives is watching your every move. This is not just about code. It is about trust, revenue, and reputation. Engineering leaders who rely on guesswork or hollow reassurances are missing the point. You need cold, hard metrics that show exactly what happened, how bad it was, and how you will prevent it next time.
Why Incidents Are a Business Problem
• Customer trust is never guaranteed. Repeated outages turn users into skeptics, and skeptics into former customers.
• Revenue does not just appear; it depends on uptime. Missed transactions and SLAs cost real money.
• Lost engineering time is lost opportunity. Fixing fires over and over again burns through your capacity for real innovation.
Incidents are not just technical hiccups. They undermine growth and stability at the business level.
Lagging Metrics: What Happened?
• Mean Time to Recovery (MTTR): How long to get back on track after you know something broke.
• Time to Detect (TTD): How long before you even realized there was a problem in production.
• Uptime and Availability: The raw truth about how often your service is reliable.
• Incident Recurrence Rate: Are you hitting the same kind of failure repeatedly?
• Customer Impact: How many customers were affected, which segments, and how severely?
These metrics paint a clear picture of the damage. For example, a 20-minute outage that went unnoticed for 5 minutes might not sound huge, but if it hit key enterprise clients during peak hours, you just gave them a reason to question your entire platform.
Leading Metrics: What’s Next?
• Deployment Frequency: How often you ship changes. Frequent but controlled releases indicate a mature pipeline.
• Change Failure Rate (CFR): The percentage of changes that cause production issues. High CFR means your process is flawed.
• Code Quality Metrics: Bloated pull requests, inadequate test coverage, and unchecked technical debt mean you are rolling the dice every time you deploy.
• Lead Time for Changes: The speed from development to production. Long lead times make quick fixes impossible.
• Feature Flag Usage: The ability to isolate risky changes so one bad commit does not blow up the entire service.
Leading metrics help you catch problems early. If you constantly see a high CFR and slow lead times, you know you are not set up for rapid, safe iterations. That is a direct call to fix your pipeline, invest in testing, and enforce feature flags more aggressively.
5 Questions you will need to find answers to...
When something breaks, everyone wants answers grounded in data, not vague excuses.
1. How Quickly Did We Respond?
To answer, focus on:
- Mean Time to Recovery (MTTR): How long did it take from the moment the incident started to full resolution?
- Time to Detect (TTD): How quickly was the issue identified?
What This Shows:
These metrics demonstrate your team’s ability to react to incidents. A long TTD signals gaps in monitoring or alerting, while a high MTTR points to inefficiencies in response workflows or tooling.
2. "Why did this happen?"
You point to CFR and code quality. Maybe your review process is superficial or you are skipping critical tests. Show them the numbers.
3. "How long did it take to fix?"
MTTR and TTD give a precise timeline. If detection alone took 10 minutes, that is on you to improve alerting and monitoring.
4. "Who got impacted?"
Customer Impact metrics let you quantify the hit. Was it a handful of free-tier users or was it premium customers who pay for guaranteed uptime?
5. "How will we prevent this again?"
Leading metrics guide the plan. Maybe you will enforce feature flags for high-risk changes, or tighten code review standards, or add automated integration tests. Show you are adjusting the process based on real data, not hopes.
Conclusion
Incidents are signals. Each one reveals weak points in your pipeline, your testing, your monitoring, and your deployment strategy. If you track and act on the right metrics, you can pinpoint what went wrong and fix it at the root. Over time, this means faster recoveries, fewer breakages, and stronger trust from everyone who depends on your systems.
Engineering leadership means facing inconvenient truths. Metrics provide those truths. Use them, adapt, and show that every setback is an opportunity to refine your operation. That is what separates a team that constantly firefights from one that builds a world-class, resilient engineering culture.