INITIAL: HASH(0x7fd88c002ee8)
CACHED:  HASH(0x7fd88c029c50)
cat
CHANGE1: HASH(0x7fd88c002ee8)
CACHED:  HASH(0x7fd88c029c50)
cat
CHANGE2: HASH(0x7fd88c029c38)
CACHED:  HASH(0x7fd88c029c50)
cat