Vapor Best Practices

1. Concurrency

• ALWAYS use Swift Concurrency (async/await) over EventLoopFuture.
• All route handlers MUST be annotated with @Sendable.

2. Controllers & Routing

• Organize routes into RouteCollection conformances.
• Do not put logic in routes.swift; delegate immediately to a Controller.
• Group routes by feature (e.g., UsersController, AuthController).
• Register controllers: app.register(collection: MyController()).
• API versioning: app.grouped("api", "v1").

3. Middleware

• Use AsyncMiddleware for custom middleware: