How I Structure Production Ready Go APIs

Building APIs for production requires more than just writing handlers.

A production backend must include:

• Logging
• Error handling
• Middleware
• Configuration management

Example API Structure

``` /cmd/server /internal/handler /internal/service /internal/repository /internal/middleware /internal/config ```

Middleware Layer

Middleware is essential for:

• Logging requests
• Authentication
• Rate limiting
• Request tracing

Example:

```go func LoggingMiddleware(next http.Handler) http.Handler { return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { log.Println("Request:", r.URL.Path) next.ServeHTTP(w, r) }) } ```

Error Handling

Consistent error responses improve API usability.

```json { "error": "invalid request" } ```

Final Thoughts

A production-ready backend API focuses on reliability, observability, and maintainability.

Good structure makes backend systems easier to scale and maintain.