10 Backend Design Pattern Laws of Senior Engineers and Architects

Summary

Key Points

• The Adapter Pattern acts as a translator between your application and external systems with different data formats or APIs, ensuring a consistent interface for your application. 0:18
• The Repository Pattern decouples data access from the rest of the application, making it easier to test and manage database changes. 0:45
• The Singleton Pattern ensures that only one instance of a class exists throughout the application's lifecycle, useful for managing shared resources like configuration or logging services. 0:59
• The Strategy Pattern allows algorithms or business rules to be swapped out easily by encapsulating each variation into its own class, improving flexibility and maintainability. 0:59
• The Factory Pattern centralizes object creation, simplifying the process of managing multiple implementations of a function and making it easier to add new ones. 2:04
• The Observer Pattern enables a one-to-many dependency between objects, where an object (subject) maintains a list of its dependents (observers) and notifies them automatically of any state changes, promoting loose coupling. 5:29
• The Builder Pattern simplifies the creation of complex objects with many optional parameters by allowing step-by-step construction, making the code more readable and less error-prone. 6:52
• The Decorator Pattern allows additional behavior to be added to an object dynamically without altering its original implementation, enabling flexible extension of functionality. 6:52
• The Circuit Breaker Pattern prevents an application from repeatedly trying to execute an operation that's likely to fail, protecting resources and preventing cascading failures in distributed systems. 6:52
• CQRS (Command Query Responsibility Segregation) separates the models for reading data (queries) from the models for changing data (commands), allowing for independent optimization of read and write operations, especially in high-throughput systems. 11:41