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You can place the file in STATIC_ROOT, that would be a suitable location.

Two thoughts on the side:

  1. Did you think about locking / mutexing the csv file while it is writing? Or is it not a problem if a client may get half a CSV file if the request comes in at an unlucky moment?

  2. CSV is not the standard way to transfer a data series to a JS client. I would probably write a JSON array to the file.

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In Django, we usually store the static files - files used by our website to render content (like CSS, JS) under the STATIC_ROOT. Files under the MEDIA_ROOT are usually media files like images and videos that Django lets the webserver to serve. I would store the visualization data file under a data directory within my app (which goes under the main django project directory). This article is a good resource to structure your django project.

As for using a CSV file for the data file that drives the visualization, I would prefer exporting your data as a JSON, since it is a more compact notation. Also, I would assume decoding JSON in JavaScript would be faster than CSV. Although it would depend on other parameters like the size and structure of data in the file.


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