How to Minimize Technical Debt and Boost Delivery Efficiency
This guide defines technical debt, outlines its classification into vulnerabilities, bugs, and code smells, and presents clear objectives, principles, standards, evaluation rules, recommended practices, and metrics to visualize, assess, and systematically reduce debt, thereby improving project delivery efficiency.
Concept
Technical debt refers to the cost of fixing code quality issues; lower debt is better, and systems exceeding a certain threshold are not allowed to go live.
Using SonarQube static scans, quality issues are identified and debt is estimated in person‑days. Issues are categorized into three types:
Vulnerability : security risks that could be exploited by attackers.
Bug : clear errors or behavior deviating significantly from expectations.
Bad smell : non‑standard or poorly written code.
Goal
Minimize the impact of technical debt and improve delivery efficiency in later project stages.
Principles
Debt visualization.
Debt repayment plan.
Standards
Daily Development
Must: No Vulnerabilities or Bugs in production deployments.
Must: Technical debt during development must stay below 20 person‑days.
Must: Debt must be visualized, recorded in JIRA with story points and priority, and be trackable.
Must: Intentional debt must be documented with reasons and repayment methods.
Recommended: Reduce some debt with each commit and each sprint.
Recommended: Allocate 10‑30% of sprint capacity to repay debt.
Recommended: Projects slated for retirement may ignore debt elimination.
Evaluation Rules
Must: Code‑level debt is assessed by static analysis tools; design‑level debt is reviewed by team members.
Recommended: DevOps team organizes periodic rule reviews, trial‑runs changes for a cycle before finalizing.
Recommended Practices
Record Technical Debt
During development, when shortcuts are taken (e.g., missing tests, insufficient design), the engineer records the reason and a better future approach.
During code review, note possible better or simpler designs even if not enforced.
In sprint retrospectives, capture improvement points related to technical direction as debt.
Assess Technical Debt
Each recorded debt item should be evaluated, defined, assigned story points and subtasks, and scheduled so that each iteration reduces some debt.
If debt accumulates, dedicate an iteration to eliminate a batch.
Eliminate Technical Debt
Debt removal should not negatively affect existing functionality or performance.
Team confirms debt stories are complete without side effects, often requiring enhanced testing.
Metrics
Security vulnerabilities, bugs, debt workload, and unit test coverage.
Daily changes of the above metrics.
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