Chapter 6: Operating Outside the Response Handler

The basic building block of application development within Sanic is the response handler, which is sometimes known as a route handler. Those terms can be used interchangeably and mean the same thing. It is the function that Sanic runs when a request has been routed to your application to be handled and responded to. This is where business logic and HyperText Transfer Protocol (HTTP) logic combine to allow the developer to dictate how responses should be delivered back to the client. It is the obvious place to start when learning how to build with Sanic.

However, response handlers alone do not provide enough power to create a polished application experience. To build out an application that is polished and professional, we must break outside the handler to see which other tools Sanic has to offer. It is time to think about the HTTP request/response cycle as not being confined to a single function. We will broaden our scope so that...