Beginner LevelSoftware Engineering Principles
What is Technical Debt, what causes it, and how do engineering teams manage it?
❓ Interview Prompt: Explain Technical Debt (Martin Fowler Debt Quadrant), deliberate vs accidental debt, code interest, and technical debt backlogs.
Technical Debt is the metaphorical cost of additional rework created by choosing an easy, fast solution now instead of using a better, longer-term architectural approach:
Causes & Management:
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Causes: Tight deadlines, lack of documentation, poor test coverage, evolving requirements.
•
Managing Debt: Allocate ~15-20% of every sprint capacity to refactoring, maintain a Technical Debt Backlog, and enforce strict definition of done (DoD) checks.
Code Implementation Example
json
{
"technicalDebtItem": "Refactor Monolithic Auth Module",
"debtType": "Pragmatic / Deliberate",
"interestCost": "Slower developer velocity during login features",
"remediationPlan": "Allocate 3 days in Sprint 24 for OAuth refactoring"
}💡Tracking technical debt items in team backlog specifications.
🎯 Interview Key Takeaway
Treat technical debt like financial debt: pay off principal regularly to prevent accumulated code interest from halting feature delivery.
#Technical Debt#Refactoring#Agile#Beginner
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