Question 1

How to use Gorilla middleware with Interpose?

Accepted Answer

Interpose is fully compatible with Gorilla middleware since both use standard `http.Handler`. Simply add Gorilla middleware like `handlers.CompressHandler` to the Interpose stack using `UseHandler`, as shown in the combined logging and gzipping example in the README.

Question 2

Interpose vs Negroni: which should I choose?

Accepted Answer

Choose Interpose if you prioritize strict net/http compatibility and want to avoid framework lock-in. Negroni offers more built-in conveniences but uses its own middleware signature, while Interpose uses standard handlers and provides adaptors for Negroni middleware.

Question 3

How to handle authentication in Interpose?

Accepted Answer

You can use any `http.Handler`-based authentication middleware. The README includes a BasicAuth example, and for more complex auth, integrate libraries like `gorilla/sessions` or custom JWT handlers by adding them to the middleware stack with `UseHandler`.

Question 4

Does Interpose support nested middleware for specific routes?

Accepted Answer

Yes, Interpose supports nested middleware stacks for different routes. The README provides examples where sub-routers are used with separate Interpose instances to apply middleware like header modifications only to certain paths, such as the '/green' route example.

Question 5

Is Interpose suitable for microservices?

Accepted Answer

Yes, its lightweight nature makes it ideal for microservices where minimal overhead is key. However, you'll need to bring your own router and other components, which might require more configuration compared to all-in-one frameworks like Echo.

Question 6

How to test middleware written for Interpose?

Accepted Answer

Since Interpose uses standard `http.Handler`, you can test middleware using Go's `net/http/httptest` package. Write unit tests that simulate HTTP requests and assert responses, similar to testing any net/http handler, without Interpose-specific dependencies.

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