首先,需要了解Memcached協議,如果不清楚可參考《Memcached 協議中英文對照》。
1、數據存儲(假設key爲zhangyan,value爲12345)
printf "set zhangyan 0 0 5\r\n12345\r\n" | nc 127.0.0.1 11211
STORED
2、數據取回(假設key爲zhangyan)
printf "get zhangyan\r\n" | nc 127.0.0.1 11211
VALUE zhangyan 0 5
12345
END
3、數值增加1(假設key爲zhangyan,並且value爲正整數)
printf "incr zhangyan 1\r\n" | nc 127.0.0.1 11211
12346
4、數值減少3(假設key爲zhangyan,並且value爲正整數)
printf "decr zhangyan 3\r\n" | nc 127.0.0.1 11211
12343
5、數據刪除(假設key爲zhangyan)
printf "delete zhangyan\r\n" | nc 127.0.0.1 11211
DELETED
6、查看Memcached狀態
printf "stats\r\n" | 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、模擬top命令,查看Memcached狀態:
watch "printf 'stats\r\n' | nc 127.0.0.1 11211"
或者
watch "echo stats | nc 127.0.0.1 11211"
memcached常用命令
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