Recursive cache
Does it need to keep a cache of itself to prove that at some point something was added to the cache which someone needs to access to prove that at some point something was added to the cache which someone need to access to prove that....
Perhaps the need the Google container ships for server storage; warming the seas all year round. 23 degrees of Bournemouth beach in mid winter would be interesting surfing... until the proliferation of Somali warlords and their fast striking pirates sieze the data centers for a high ransom....