Uploading a video post and process using a worker

In this section, we are going to process an uploaded video. Processing an uploaded video is not a trivial task as it can take a lot of time, so even with the async programming technique, the generated response will take a lot of time.

Another technique in programming to solve a long processing time is using message passing. We are going to create another thread to process the video. When a user uploads a video, we will do the following:

1. Generate a path to the temporary file.
2. Mark the path as unprocessed.
3. Store the path to the file in the database.
4. Send a message from the main Rocket thread into the thread for processing the video.
5. Return the response for uploading the video.

If the thread to process the video receives a message, it will find the data from the database, process the file, and mark the post as finished.

If the user requests the posts list or posts while it's still being processed...