January 12, 2024

Asynchronous Processing with Phoenix LiveView using assign_async

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Asynchronous Processing with Phoenix LiveView using assign_async

Source: youtube.com

The video tutorial by Chris, presented on the channel CodeNextDoor, delves into the handling of asynchronous operations within a Phoenix LiveView, starting from a synchronous implementation, moving onto asynchronous with Elixir Tasks, and finally using `assign_async` and `AsyncResult` to refine the approach. Chris begins with an explanation of asynchronous work's benefits in LiveViews and live components, enabling quicker UI interactions while offloading data fetching or external service communication. The content covers the traditional way of performing operations in LiveViews which can result in blocking behavior and slow responses. Chris then introduces the use of Elixir's Task module to address these issues by running operations in separate processes, ultimately showing how `assign_async` and `AsyncResult` can simplify asynchronous work, provide UI feedback (like loading states), and manage task lifecycles more effectively. Code examples and trials on a local server demonstrate noticeable performance improvements and less obtrusive user experiences.

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