Track Shopping Carts in Real-Time

Track each cart

We’ll use Presence to track each ShoppingCartChannel and the shopper’s cart item IDs. Each change to a cart will dispatch an update to the CartTracker, and the admin client will automatically receive the changes. Our process for this task will break down into these steps:

1. Create a CartTracker module using Phoenix.Presence.
2. Connect ShoppingCartChannel to the CartTracker.
3. Send cart updates to the CartTracker.
4. Configure admin.js to

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