<ul><li>Task module in Elixir is often underutilized compared to GenServer for concurrent operations.</li><li>Tasks are lightweight processes for performing defined actions without much inter-process communication.</li><li>They serve well in transforming sequential code into concurrent code, handling tasks like large file uploads concurrently.</li><li>Task processes are preferred for short-lived operations without state management, unlike GenServer.</li><li>Task.start/1 is used for side-effects, while Task.async and Task.await are for received results.</li><li>A simple cron job for clearing expired tokens is an example of Task module practical usage.</li><li>The code snippet showcases a background process for token cleanup at specified intervals.</li><li>By adding the module to the supervision tree, the task starts with the app and gains fault tolerance.</li><li>Supervised modules need to implement start_link/1 function to receive a single argument.</li><li>With the added supervision, Elixir's supervisor ensures automatic restarts on task crashes for improved fault tolerance.</li></ul>

A Practical Guide to Elixir’s Task Module — Let’s create a Cron Job

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