I have python script in Splunk that generates .docx report.
When this report is created, I will receive link to this file that I use on my html/js dashboard to present the user with download link. The file is located inside the Splunk instance, Splunk has it's own cache but this one is cleared with version _bump.
The issue (probably) is that browser is caching the file and if I generate new report with different content then I keep downloading the old file instead of new one.
I am able to download the new version of the file only if I Empty cache and hard reload the webpage.
I can make a workaround by creating file with different name in the python but that like last possible solution. I would love to have just 1 report generated.
Is there a way how to clear this cache and make hard reload with javascript or how to force browser to download new version of the file?
Browsers cache the files based on the URL given. In order to control caches via the front-end browser, just add ?cachebust=TIMESTAMP to the URL, where TIMESTAMP is just the new Date().getTime(). Since you are adding it as a query parameter, it will still request the same resource from the back-end, so you don't have to do anything fancy server-side.
If you want to have it be versioned so you have more control over when the cache is busted, you could use a number that only gets incremented when you want to bust the cache. All that matters is the URL changes.
http://www.example.com/someFile.txt?cacheBust=109230110238