Defect Lifecycle Explain

The bug lifecycle, also referred to as the defect lifecycle, delineates the stages a software bug traverses from its discovery to resolution. This structured approach aids software development teams in managing and monitoring bug fixes. While the specific stages may vary based on the development methodology employed, such as Agile or Waterfall, the bug lifecycle typically encompasses the following stages:

1. Identification/Discovery:

• Bugs are identified through testing, user feedback, or monitoring. Testers, developers, or end-users may discover and report issues.

2. Logging/Reporting:

• Once a bug is identified, it is logged or reported in a bug tracking system. The report includes details like the bug's description, steps to reproduce, severity, and relevant attachments.

3. Prioritization:

• Bugs are prioritized based on severity and impact. High-severity bugs affecting functionality or security usually receive higher priority.

4. Assignment:

• The bug is assigned to a developer or team responsible for fixing it, considering the developer's expertise and workload.

5. Investigation/Analysis:

• The assigned developer investigates the bug, analyzing the code, examining logs, and replicating the issue if necessary.

6. Resolution/Fixing:

• Once the root cause is identified, the developer fixes the bug by modifying the code. The fix undergoes testing to ensure it resolves the issue without introducing new problems.

7. Verification/Testing:

• The fixed code is tested to confirm that the bug is resolved, and the fix doesn't introduce new issues. This verification is often conducted by the testing team.

8. Closed/Reopened:

• If the fix is successful, the bug report is marked as "Closed." If the issue persists or new problems emerge, the bug may be marked as "Reopened" for further attention.

9. Documentation:

• Thorough documentation is maintained throughout the bug's lifecycle, covering details about its history, resolution steps, and any lessons learned.

10. Retesting:

• After a bug is marked as closed, it may undergo retesting during subsequent development cycles or releases to ensure the issue remains resolved.

Understanding and efficiently managing the bug lifecycle is pivotal for delivering high-quality software and maintaining a stable, reliable product. This systematic process empowers teams to identify, address, and learn from issues, fostering continuous improvement in software quality over time.