total 79.2 -> 13.2 (6.0x)
self 34.2 -> 8.1 (4.2x)

target.actual-name is an ideal cache key because it is already used to register targets in the build engine which requires on it to be unique enough to not collide, while also is the shortest unique identifying string which is for a file targets consists of the target relevant properties, path prefix and name.

…improvement