mem.txt

127.0.0.1:6379> memory help
1) "MEMORY USAGE <key> [SAMPLES <count>] - Estimate memory usage of key"
2) "MEMORY OVERHEAD                      - Show memory usage details"

127.0.0.1:6379> memory overhead
 1) "total.allocated"
 2) (integer) 1014672
 3) "startup.allocated"
 4) (integer) 962496
 5) "replication.backlog"
 6) (integer) 0
 7) "clients.slaves"
 8) (integer) 0
 9) "clients.normal"
10) (integer) 32782
11) "aof.buffer"
12) (integer) 0
13) "db.0"
14) 1) "overhead.hashtable.main"
    2) (integer) 152
    3) "overhead.hashtable.expires"
    4) (integer) 32
15) "overhead.total"
16) (integer) 995462
17) "dataset"
18) (integer) 19210

Given that overhead usually means an expense or cost, whats the reasoning for using memory overhead as the command rather than say memory usage ?