[enhancement]: Set Cache-Control headers on generated images in WebUI

[hulknsmash]

Is there an existing issue for this?

• I have searched the existing issues

Contact Details

No response

What should this feature add?

I'm using InvokeAI on a remote host with >200ms latency. Since the web ui doesn't set Cache-Control header switching images is very slow even though the image I'm switching to has already been loaded before, since the browser reaches out for a 304 first before switching.

Since each image can't be modified after generation, it should be ok to specify a reasonable max-age.

Alternatives

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Aditional Content

No response

[psychedelicious]

Hi, I think you've raised this regarding the 2.3 version of the app. We've been working on the 3.0 release for a few months now. I've added max-age to 3.0 in #3711. Thanks for the suggestion.