Memcache not flushing cache when staff updates their availability

[Valentina R]

I have isolated it to the Memcached cache. When this is turned off the problem goes away. This is a standard form of caching. Can you guys fix/add the proper cache flush when staff updates their availability?

Reported here.

[Željan Topić]

Flushing products related to staff when staff profile is updated or deleted from 4.10.7.