Is there a library to re-introduce relevant delays into a CDN so that all users experience their own geographically-appropriate response times? I mean, I want

Is there a library to re-introduce relevant delays into a CDN so that all users experience their own geographically-appropriate response times? I mean, I want reliability. But I also want Europeans to be able to taste that authentic latency they'd expect from a fledgling startup running out of a garage in San Jose.