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Exploring Phoenix LiveView's Async Operations
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Source: fly.io
The article highlights the capabilities of Phoenix LiveView's async operations feature introduced in version 0.20, as discussed by Mark Ericksen. This feature offers a structured way to execute asynchronous tasks in separate processes while maintaining a responsive and uncrashed LiveView component. With this addition, it is possible to start, track, and manage asynchronous tasks, handle various states like loading, successful completion, errors, and process crashes, and even cancel running tasks. The feature simplifies many complexities associated with asynchronous operations, such as linking processes, trapping exits, and cancelling tasks. The author outlines a practical scenario and code examples to illustrate real-time message streaming rather than just showing final results. Ericksen demonstrates how to use the async assigns feature in contexts where you're not merely interested in the results of a long-running task but the ongoing side-effects, which is not the typical use case the feature primarily addresses, yet it's flexible enough to accommodate. LiveView's new tools have proven convenient and robust enough to handle a wide range of scenarios, including projects that deviate from conventional asynchronous handling.
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