 ,需要了解Memcached协议,如果不清楚可参考《Memcached 协议中英文对照：http://bbs.chinaitlab.com/thread-308784-1-1.html》.
1、数据存储（假设key为zhangyan,value为12345）
| printf "set zhangyan 0 0 5rn12345rn" | nc 127.0.0.1 11211 |
STORED
2、数据取回（假设key为zhangyan）
| printf "get zhangyanrn" | nc 127.0.0.1 11211 |
VALUE zhangyan 0 5
12345
END
3、数值增加1（假设key为zhangyan,并且value为正整数）
| printf "incr zhangyan 1rn" | nc 127.0.0.1 11211 |
12346
4、数值减少3（假设key为zhangyan,并且value为正整数）
| printf "decr zhangyan 3rn" | nc 127.0.0.1 11211 |
12343
5、数据删除（假设key为zhangyan）
| printf "delete zhangyanrn" | nc 127.0.0.1 11211 |
DELETED
6、查看Memcached状态
| printf "statsrn" | nc 127.0.0.1 11211 |
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
7、模拟top命令,查看Memcached状态：
| watch "printf ''statsrn'' | nc 127.0.0.1 11211" |
或者
| watch "echo stats | nc 127.0.0.1 11211" | |
