stats key/vkey is not specific about the representation of binary numbers

The stats for key/vkey[1] are currently not very clear about what the value is of several things known as binary values inside the server. Notably, the protocol[2] states replies need to be in ASCII so the return value for the cas, expiration, etc. need to be specified.

What's there for CAS seems to be an ASCII representation of uint64_t, which would match the binary_protocol.h

1. https://github.com/couchbase/ep-engine/blob/master/docs/stats.org#29-stats-key-and-vkey
2. http://code.google.com/p/memcached/wiki/MemcacheBinaryProtocol