Data: Possible race condition with in-flight data resolution

[aduth]

From Automattic/wp-calypso#29445 (comment) :

There is just one race condition bug that remains: if a request for entities from site ID=1 is in flight, and we switch to site ID=2, then the response from site ID=2 will be received into store with site ID=2!

The cache invalidation code in #10089 probably has a similar bug: it won't invalidate resolution for selector whose request is in flight. There can be "get a list" and "add to list" requests happening at the same time, and if their "issue request from client", "perform request on server" and "receive response on client" are performed in a certain order, the resulting state will miss the just-added entity.

cc @jsnajdr

[paaljoachim]

I assume this issue is not relevant any longer.

@gziolo

[mrfoxtalbot]

It looks like the linked PR fixes this so I am going to go ahead and close it.

It this is still relevant, @Copons, @paaljoachim, @aduth, please feel free to re-open