[derefr]

That HTTP request is kind of hideous. All those extra parameters that have nothing to do with what the response will end up being, and which change often. Seems like a great way to toss out all your API-response edge-cache-ability.

[kevincox]

With HTTPS you need to own the edge cache yourself and most will have options to ignore the headers and URL parameters that you want. That way they can log the tracking data and serve the cached data as if they were never there.

[derefr]

This is mostly true — though keep in mind that corporate forward-proxy caches still work under strict TLS, by installing root CA certs through GPOs on corporate machines, that re-sign all connections.

More importantly, if you're talking to a browser, the browser's own cache is in play. It's not an edge cache, per se, but it's just as important as one, and acts very similar to one.