Launching asynchronous tasks with Celery
Everything you execute in a view affects response times. In many situations, you might want to return a response to the user as quickly as possible and let the server execute some process asynchronously. This is especially relevant for time-consuming processes or processes subject to failure, which might need a retry policy. For example, a video sharing platform allows users to upload videos but requires a long time to transcode uploaded videos. The site might return a response to users to inform them that the transcoding will start soon, and start transcoding the video asynchronously. Another example is sending emails to users. If your site sends email notifications from a view, the Simple Mail Transfer Protocol (SMTP) connection might fail or slow down the response. Launching asynchronous tasks is essential to avoid blocking the code execution.
Celery is a distributed task queue that can process vast amounts of messages...
