Instruction: Explain how to add real-time capabilities to a Django application using WebSockets.
Context: Candidates should demonstrate knowledge of real-time web technologies and their integration into Django applications for dynamic user experiences.
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First, it's fundamental to clarify that Django, by itself, traditionally handles HTTP requests and responses, which are stateless and not designed for real-time communication. However, with the advent of Django Channels, we can extend Django to handle WebSockets, allowing for a persistent, open connection between the client and server. This is crucial for real-time features such as chat applications, live notifications, or real-time data updates.
To implement WebSockets in a Django project, one would start by installing Django Channels, which serves as the backbone for handling WebSockets in Django. Channels work by taking Django’s synchronous, request-response architecture and extending it with asynchronous capabilities. After installation, the next step is to configure the ASGI (Asynchronous Server Gateway Interface) application, which Channels will use to handle asynchronous...