Technical Debt: How to Recognize and Address It
Published on September 15, 2023
Technical debt is like financial debt—a little bit can be strategic, but too much will crush you. Here's how to identify technical debt in your codebase and create a plan to pay it down.
What Is Technical Debt?
Technical debt is the implied cost of rework caused by choosing a quick solution now instead of a better approach that would take longer. Sometimes it's intentional ("We'll clean this up later"), sometimes it's the result of poor decisions or outdated code that hasn't been maintained.
Signs You Have Technical Debt
- Simple changes take disproportionate effort
- Developers avoid touching certain parts of the code
- Bug fixes introduce new bugs
- Test coverage is minimal or nonexistent
- The team spends more time fixing issues than building features
- New developers take forever to become productive
Measuring Technical Debt
You can measure technical debt in several ways:
Time-based: How long would it take to refactor or rewrite problem areas?
Cost-based: What's the ongoing cost of working around the debt?
Risk-based: What's the business impact if debt-ridden code fails?
Paying Down Technical Debt
You can't fix everything at once. Prioritize based on risk and impact:
1. Identify high-risk areas - What code is most likely to cause problems? Focus there first.
2. Improve incrementally - Don't stop feature development to fix technical debt. Instead, improve code as you touch it. Boy Scout Rule: leave the code better than you found it.
3. Establish quality standards - Prevent new debt from accumulating. Code reviews, automated testing, and clear standards help.
4. Budget for maintenance - Allocate time each sprint for refactoring and cleanup. Treat it as part of normal development, not a separate initiative.
When to Declare Bankruptcy
Sometimes technical debt is so severe that incremental fixes won't work. If your codebase has become unmaintainable, a more aggressive approach (like a targeted rebuild) might be necessary.
Struggling with technical debt? Let's talk about creating a practical plan to address it.
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