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Elevating Code Quality: Transforming Legacy Systems through Strategic Refactoring and Modern Best Practices

by Runninghill Software Development
Published on: 6/19/2024

We’ve embraced the ethos of ‘Leave code better than you found it,’ undertaking extensive rounds of code refactoring to streamline bulky codebases and elevate good coding practices, ensuring continual enhancement of our source code quality. Empowering teams to conquer challenges and deliver impeccable solutions.


  1. Incorrect Standards: The existing setup followed outdated and inconsistent coding standards, leading to potential issues in maintainability and scalability.
  2. Logic at Controller Level: Business logic was entangled within the controller layer, violating the principles of separation of concerns and hindering code reusability.
  3. Direct Database Calls: Direct interactions with the database posed security risks and undermined the potential for leveraging higher-level abstractions for data manipulation, leading to performance bottlenecks.
  4. Inadequate Logging: Insufficient or absent logging mechanisms impeded troubleshooting efforts and obscured insights into system behaviour and performance.
  5. Lack of Communication: Absence of effective communication among team members resulted in code overwriting, leading to conflicts and inefficiencies in the development process.
  6. Absence of Unit Tests: The absence of unit tests left the system vulnerable to regression issues and hindered the validation of individual components’ functionality.
  7. Unclear Task Details: Task descriptions lacking acceptance criteria and clear descriptions led to ambiguity and confusion, hampering productivity and increasing the likelihood of misunderstandings.


  1. Standards Compliance: Adopted modern coding standards and best practices, ensuring consistency, readability, and maintainability across the codebase.
  2. Service and Repository Refactoring: Decoupled business logic from controllers, implementing a structured service layer to encapsulate operations and a repository layer for database interactions, promoting modularization and facilitating easier testing and maintenance.
  3. API Integration: Integrated external APIs to streamline operations, leveraging asynchronous communication for improved responsiveness and reduced latency.
  4. Logging Enhancement: Implemented comprehensive logging mechanisms adhering to industry standards, capturing relevant information at critical junctures to facilitate effective monitoring, debugging, and performance optimization.
  5. Improved Communication Channels: Established clear communication channels and processes within the team to facilitate collaboration, reduce conflicts, and ensure effective coordination during development.
  6. Implementation of Unit Testing: Implemented robust unit tests to validate the functionality of individual components, ensuring reliability, identifying regressions, and promoting code quality.
  7. Task Clarity Enhancement: Ensured that task descriptions include defined acceptance criteria and detailed descriptions, fostering clarity, reducing misunderstandings, and enhancing productivity.


  1. Improved Maintainability: The refactored architecture adheres to modern standards, making the codebase more coherent, modular, and easier to maintain.
  2. Enhanced Security: By abstracting database interactions through repositories and utilising API calls, the system is shielded from potential vulnerabilities associated with direct database access.
  3. Scalability: Leveraging external APIs enables seamless scalability, allowing the infrastructure to adapt dynamically to fluctuating demand without compromising performance.
  4. Enhanced Visibility: Robust logging mechanisms provide granular insights into system behaviour, facilitating proactive identification and resolution of issues, thereby enhancing overall reliability and user experience.
  5. Streamlined Development Process: Improved communication channels fostered a more collaborative environment, reducing instances of code overwriting and promoting knowledge sharing among team members.
  6. Increased Code Stability: Implementation of unit tests bolstered the robustness of the codebase, enabling early detection of defects and ensuring that changes do not introduce unintended side effects, thereby enhancing overall code stability and quality.
  7. Improved Task Execution: Clear task details and acceptance criteria facilitated smoother task execution, reducing ambiguity and ensuring that deliverables meet stakeholder expectations, thereby enhancing overall project efficiency and effectiveness.

These strategic efforts have transformed the codebase, fostering a culture of continuous improvement and ensuring that our systems are robust, secure, and scalable.


Runninghill Software Development