What folder should I use to cache in Kamal

[leonardo2204]

Thanks for reading this.

I'm self-hosting my application using Kamal, and one of it's features is the asset_path, which let's me keep some files for an extended time, so when I build a new version, the old files (.js, .html, .css etc) are still there, making the UX better for not having 404.
I'm doing like this right now:

asset_path: .output/

But I'm still getting 404 when I deploy a new version, or I must purge the entire website cache, which is terrible for performance.
Is this the correct folder I should be adding to this path?

Thanks