Building Microservices API in Go - Error Handling Part 1

This video tutorial extends the previous session by adding business complexity to the project. It focuses on building an API to fetch a customer by ID, ensuring the URL accepts only numeric IDs and returns a JSON object. The video covers implementing a method in the repository interface, its DB adapter, and handling errors like 404 and server errors. The tutorial is divided into two parts, with the first part addressing the initial requirements and the second part focusing on error handling. The video concludes with testing the application and verifying the requirements.

What is the role of the 'getcustomer' method in the service layer?

How does the application ensure that only numeric IDs are accepted?

What steps are taken to handle a successful customer retrieval?

What will happen if an alphanumeric ID is sent to the API?