### **Introduction** ### Now that we have discussed various aspects of sound application architecture using Laravel 4, Let's dig into some more specifics. In this chapter, we'll discuss tips for decoupling various handlers like queue and event handlers, as well as other "event-like" structures such as route filters. > ### **Don't Clog Your Transport Layer** ### > > Most "handlers" can be considered transport layer components. In other words, they receive calls through something like queue workers, a dispatched event, or an incoming request. Treat these handlers like controllers, and avoid clogging them up with the implementation details of your application. >