🔗 Batching Phoenix LiveView updates

To batch frequent server-side updates in a Phoenix LiveView application, utilize socket.private for temporary storage and only update socket.assigns when ready to send the updates to the client. This approach was developed when a dashboard displaying betting odds experienced lag during peak usage. The original implementation triggered many updates per second, overwhelming the client-side rendering. The solution involved updating the private field without causing a rerender until a specified interval. For example, instead of updating socket.assigns.count with every tick, updates were first stored in socket.private.count, and then socket.assigns.count was updated less frequently. The technique effectively reduced the frequency of updates while maintaining responsiveness for users, ensuring a smoother experience during high-load situations. This batching method can significantly enhance performance in live applications where real-time updates are necessary.