Some of us might be forced to use
It turns out that
The thing is that the project still uses AFNetworking v.2.6.3 and to switch to the v.3 means a lot of refactoring, possible bugs, fixes for those possible bugs and so on. It means that we are pretty much stuck with this version until we have time to update this library.
In search of the caching origins
By using AFNetworking we decided to include it's UIKit extensions, which give you some neat methods to ease your networking calls for them. We've been extensively using UIImageView extensions. I thought that this was the reason and started to dig deeper