Service workers: caches.match(Regexp)

I'm wanting to invalidate a previously cached GET from my service worker when a POST, PUT, or DELETE to the same url or any url of a resource or collection 'under' it happens, for example:

let's say I cache /subscriptions and later on I do a POST to /subscriptions to add a new subscription, or say I PUT to /subscriptions/243 to update an existing subscription. This means that my cached subscriptions collection is now stale data and I want to delete it from my cache so the next request will go to the server.

I've thought of two options, where I'm not sure either are possible:

Can I use a Regexp in the caches.match() call?

This way I could just match the parent collection piece of the requested url with keys found in the cache.

Can I get the keys of each cached data response?

If so, I could just loop through each response and see if the key meets my criteria for deleting it.

Any ideas? Thanks!