Flush the BLOB Cache in SharePoint

Sometimes you upload an HTML or JS file to SharePoint, reload it in a web browser, and it still downloads the old version of the file. You delete the old file using the Web UI, upload the new file, and it STILL downloads the old version of the file. When this happens, you need to “Flush the BLOB Cache.” See

Flush the BLOB cache in SharePoint Server – SharePoint Server | Microsoft Docs

and

Configure cache settings for a web application in SharePoint Server – SharePoint Server | Microsoft Docs

On my SharePoint 2013 server, the BLOB Cache is in L:\BlobCache and, instead of flushing the entire cache, I can go there and delete the particular file that is giving me trouble.