You're developing a RESTful API using Go, and you need to implement authentication for certain routes. How would you use middleware to accomplish this task?
- Delegate authentication to a separate microservice, communicating via HTTP requests.
- Implement authentication directly within each route handler function.
- Use a middleware function to intercept incoming requests, authenticate users based on credentials.
- Utilize third-party authentication providers like OAuth, integrating their SDKs into your Go application.
Middleware acts as a bridge between the client request and the route handler, allowing you to authenticate users before they access protected routes. It ensures that authentication logic is centralized, making it easier to manage and update. Directly implementing authentication in each route handler can lead to code duplication and maintenance issues. Delegating authentication to a separate microservice introduces unnecessary network overhead and complexity. Third-party authentication providers offer a convenient way to authenticate users without reinventing the wheel.
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