Structure Your Golang Service With Layers Like This

How to Structure Your Golang Service with Layers

1. Introduction to Decoupling Layers:

   • In a previous stream, the importance of decoupling the transportation layer from the business logic layer was emphasized.
   • The transportation layer handles requests and responses in web applications.
   • Understanding these layers is crucial for developing efficient and maintainable code.

2. Understanding the Transportation Layer:

   • The transportation layer deals with transporting data between endpoints in a web application.
   • Common protocols used in the transportation layer include HTTP, JSON, Proto buffer, gRPC, and others.
   • Decoupling this layer from the business logic layer allows for flexibility and scalability in the application.

3. Decoupling Layers in Code:

   • Create separate functions for handling requests and responses to decouple the transportation layer.
   • Implement a method like handleAddRequest that processes incoming requests and returns a JSON response.
   • Ensure that the business logic layer only returns data without being tied to the transportation layer.

4. Implementing the Ad Service Interface:

   • Define an interface named AdService with methods like Add that return data like bit price and an error.
   • Implement the methods of the interface in a separate struct to encapsulate the business logic.

5. Adding Instrumentation for Logging:

   • Introduce logging middleware to track and log values produced by the business logic.
   • Implement a logging middleware that wraps around the business logic to capture and log return values.
   • Separate the instrumentation logic from the business logic to maintain a clear separation of concerns.

6. Utilizing Interfaces for Flexibility:

   • Use interfaces to abstract implementations and allow for flexibility in changing or adding functionalities.
   • Consider implementing patterns like hexagonal architecture to enhance modularity and maintainability.

7. Supporting Multiple Transportation Logics:

   • By decoupling the business logic from the transportation layer, you can support multiple transportation protocols for the same functionality.
   • Changes or additions to transportation protocols can be made without impacting the core business logic.

8. Continued Learning and Resources:

   • Explore further resources like the fulltime go aspect to deepen your understanding of structuring Golang services.
   • Emphasize the importance of separating concerns in code for improved maintainability and scalability.

By following these steps and understanding the concepts of decoupling layers in Golang services, you can build robust and flexible applications that are easier to maintain and scale.