Telnet操作memcached

telnet登录

#telnet <ip> 
 
[root@c1 ~]# telnet 127.0.0.1
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '^]'.

set

set在memcached中添加一个key->value，如果这个key之前已经存在，那么就会替换，否则就是添加

语法： set <key> 0(是否需要压缩)  60(过期时间s)  6(字符的长度)

#设置username的值为heboan, 不压缩，过期时间为60s，字符长度为6
set username
heboan
STORED

get

从memecached中根据key来获取值

语法： get <key>

get username
VALUE username
heboan
END

add

add在memcached中添加一个key->value，如果memcached中已经存在了这个key，那么就添加失败，否则添加成功

语法和set一样

set username
heboan
STORED
add username
heboan
NOT_STORED      #username已经存在，添加失败
add love   
 
STORED      #love之前不存在，添加成功

delete

语法： delete <key>

set username
heboan
STORED
delete username  #删除username
DELETED
get username   #删除后，username不存在了
END

flush_all

删除memcached 中所有的数据

set book
python
STORED
 
set username
heboan
STORED
 
flush_all
OK
 
get book
END
get username
END

incr

整数自增

语法： incr <key> num(相加的值)

set age   
 
STORED
incr age 
 
incr age

decr

整数相减

set age   
 
STORED
decr age 
 
decr age

stats

查看memcached的状态

STAT pid
STAT uptime
STAT time
STAT version 1.4.
STAT libevent 2.0.-stable
STAT pointer_size
STAT rusage_user 0.037207
STAT rusage_system 0.186036
STAT curr_connections
STAT total_connections
STAT connection_structures
STAT reserved_fds
STAT cmd_get
STAT cmd_set
STAT cmd_flush
STAT cmd_touch
STAT get_hits
STAT get_misses
STAT delete_misses
STAT delete_hits
STAT incr_misses
STAT incr_hits
STAT decr_misses
STAT decr_hits
STAT cas_misses
STAT cas_hits
STAT cas_badval
STAT touch_hits
STAT touch_misses
STAT auth_cmds
STAT auth_errors
STAT bytes_read
STAT bytes_written
STAT limit_maxbytes
STAT accepting_conns
STAT listen_disabled_num
STAT threads
STAT conn_yields
STAT hash_power_level
STAT hash_bytes
STAT hash_is_expanding
STAT bytes
STAT curr_items
STAT total_items
STAT expired_unfetched
STAT evicted_unfetched
STAT evictions
STAT reclaimed 

stats