Cache unresolvable artifacts too, like "Negative Cache"

[wglanzer]

Request details

We got the ability to define the "max age of metadata file".
This is extremely useful, if you do not want to send excessive amounts of requests to the upstream mirrors.

Will it be possible to add the ability to cache "unresolvable" artifacts too?
Nexus does give us this option, called "Negative Cache".

I understand, that this option may result in invalid responses, if something gets uploaded to a mirror - but the performance improvement otherwise should be massive.

[okgolove]

This is a killer feature if we are talking about proxy repositories. I've compared Reposilite with Nexus (with enabled Negative Cache) - 200 sec vs 60 sec

[okgolove]

Hi @dzikoysk! Do you have any plans about this issue?

[dzikoysk]

Hey, I agree it'd be nice to have it as an opt-in feature. Unfortunately, I'm quite busy with some other important stuff thus the priority on this is quite low for me at this moment. If any of you would like to work on it, go ahead - I'll try to help here (or on our Discord server) in case of any problems 🤞