Applying Programming Patterns

Programming patterns (also known as design patterns) are recurring solutions to common design problems in software. Think of patterns such as Observer (for handling events), Strategy (for selecting algorithms at runtime), Singleton (for unique service objects), Factory (for creating objects), and Repository (for data access). In business applications, specific patterns are also common, such as MVC/MVVM (for separating concerns in user interfaces), Microservices (for distributed systems), or Domain-Driven Design patterns for complex business logic.

By using known patterns, you benefit from proven best practices: it provides structure and maintainability, and other developers immediately recognize the intention of the code. Such a pattern offers a template solution so you don't have to reinvent the wheel each time, allowing you to focus on solving business problems rather than technical implementation details.

Starting Points

• Design Patterns (Refactoring Guru)
• Enterprise Integration Patterns
• Domain-Driven Design Patterns

Key Points

• It is important to apply patterns consciously and appropriately – choose a pattern because it helps solve a business or technical problem, not just for the sake of using a pattern.
• You identify design challenges in business applications and determine which pattern(s) are suitable for addressing them.
• You explain why the chosen pattern is the best choice for the specific case and what advantages it offers in terms of maintainability, scalability, or performance.
• You implement the design pattern correctly while maintaining alignment with business requirements.
• You present the use of the pattern in documentation or diagram form that is understandable to both technical and business stakeholders.