数据存储（假设key为test，value为12345）
- printf "set test 0 0 5 12345 " | nc 127.0.0.1 12000
STORED
数据取回（假设key为test）
- printf "get test " | nc 127.0.0.1 12000
VALUE test 0 5
12345
END
数值增加1（假设key为test，并且value为正整数）
- printf "incr test 1 " | nc 127.0.0.1 12000
12346
数值减少3（假设key为test，并且value为正整数）
- printf "decr test 3 " | nc 127.0.0.1 12000
12343
数据删除（假设key为test）
- printf "delete test " | nc 127.0.0.1 12000
DELETED
查看Memcached状态
- printf "stats " | nc 127.0.0.1 12000
STAT pid 3025
STAT uptime 4120500
STAT time 1228021767
STAT version 1.2.6
STAT pointer_size 32
STAT rusage_user 433.463103
STAT rusage_system 1224.515845
STAT curr_items 1132460
STAT total_items 8980260
STAT bytes 1895325386
STAT curr_connections 252
STAT total_connections 547850
STAT connection_structures 1189
STAT cmd_get 13619685
STAT cmd_set 8980260
STAT get_hits 6851607
STAT get_misses 6768078
STAT evictions 0
STAT bytes_read 160396238246
STAT bytes_written 260080686529
STAT limit_maxbytes 2147483648
STAT threads 1
END
模拟top命令，查看Memcached状态：
- watch "printf 'stats ' | nc 127.0.0.1 12000"
或者
- watch "echo stats | nc 127.0.0.1 12000"