Render Real-Time HTML with Channels

There are two major real-time features of our store. The first is to mark a shoe as released and to update all connected shoppers with the released shoe. We’ll use HTML replacement for this feature by swapping out “coming soon” with our size selector. This approach makes it easy to ensure that a user interface looks the same before and after a real-time update occurs.

Adding the application’s real-time features is usually less work than the other parts of writing the application due to Channel’s abstractions. In this chapter, we’ll write a small amount of code compared to the size of the project base that exists already. Real-time features are often added on top of other features, so it does make sense that ...

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