Revised cache matrix using Xcode

my first function works
my second function is inoperable
Revert "Revised cache matrix using Xcode"

This reverts commit c7d5a24a45fe648e1ce3f60b00b31e453b9f7dc0.
Revert "Revised cache matrix"

This reverts commit c7d5a24a45fe648e1ce3f60b00b31e453b9f7dc0.