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What strategies can you use to reduce bugs during maintenance?

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Bugs are inevitable in any application development project, but they can become especially costly and frustrating during maintenance. Maintenance is the process of updating, fixing, or improving an existing application to meet changing requirements, user feedback, or security standards. In this article, you will learn some strategies that can help you reduce bugs during maintenance and ensure your application's quality and reliability.

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1 Use version control

Version control is a system that tracks and manages changes to your application's source code over time. It allows you to create, review, and merge different versions of your code, as well as revert to previous states if something goes wrong. Version control can help you reduce bugs during maintenance by enabling you to isolate and test changes before deploying them, avoid conflicts and errors caused by multiple developers working on the same code, and maintain a history of your code's evolution and performance.

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Piyush Parihar

Software Engineer
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* Following a consistent coding style makes the code easier to understand for everyone working on the project. This reduces the chance of introducing errors due to misinterpreting someone else's code. * Having another developer review your code before it's merged into the main codebase can help identify potential issues and bugs early on. This promotes a collaborative approach and improves code quality. * Regularly refactoring your code can improve its readability, maintainability, and modularity. * Version Control tracks changes to your codebase over time. It allows you to see exactly what modifications were made, revert to previous versions if necessary, and isolate the impact of specific changes.

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2 Write automated tests

Automated tests are scripts that run your application's code and check if it behaves as expected. They can cover different aspects of your application, such as functionality, performance, security, or user interface. Automated tests can help you reduce bugs during maintenance by ensuring that your code meets your specifications and requirements, detecting and preventing regressions or errors introduced by new changes, and saving time and resources that would otherwise be spent on manual testing.

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Saharsh Sinha

Software Architect | Product Owner | Full Stack @ Intel Corporation
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Automated testing is an essential tool for preventing new bugs in existing code during maintenance since they quickly and reliably validate large parts of the application. Complementary to automated tests, code coverage reports are useful for measuring the percentage of application code that the automated tests exercise, and can be a good initial metric to pursue. Care should be taken, though, with the code coverage metric as it's generally indicative of the lines of code covered by tests and may give a false sense of security. There might be business scenarios left out of automated test coverage even with a 100 percent code coverage report. It's great however for Unit test coverage, but can be less reliable for e2e scenario coverage.

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3 Follow coding standards

Coding standards are guidelines that define how you should write, format, and organize your code. They can include rules for naming, indentation, comments, syntax, structure, and best practices. Coding standards can help you reduce bugs during maintenance by making your code more readable, consistent, and maintainable, as well as easier to debug and refactor. Coding standards can also facilitate collaboration and communication among developers, as well as compliance with industry or regulatory standards.

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4 Refactor your code

Refactoring is the process of improving your code's design, structure, or quality without changing its functionality. It can involve removing duplication, simplifying complexity, enhancing readability, or applying design patterns. Refactoring can help you reduce bugs during maintenance by eliminating or reducing technical debt, which is the accumulated cost of suboptimal or outdated code that hinders your application's performance, security, or scalability. Refactoring can also improve your code's modularity, reusability, and extensibility.

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5 Use code reviews

Code reviews are the practice of examining and evaluating your code by yourself or by other developers. They can be done formally or informally, before or after committing your code, and using tools or platforms that support feedback and collaboration. Code reviews can help you reduce bugs during maintenance by identifying and correcting mistakes, errors, or vulnerabilities in your code, as well as improving your code's quality, style, and functionality. Code reviews can also foster learning, knowledge sharing, and team cohesion among developers.

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6 Seek user feedback

User feedback is the input or opinion that you receive from your application's users or stakeholders. It can be collected through various methods, such as surveys, interviews, analytics, or testing. User feedback can help you reduce bugs during maintenance by revealing and prioritizing the issues, problems, or needs that affect your application's usability, functionality, or satisfaction. User feedback can also provide you with insights, suggestions, or expectations that can guide your application's improvement and innovation.

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7 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?

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What strategies can you use to reduce bugs during maintenance?

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1 Use version control

2 Write automated tests

3 Follow coding standards

4 Refactor your code

5 Use code reviews

6 Seek user feedback

7 Here’s what else to consider

Application Development

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