memcache运维总结
第一部分：memcache安装
1、安装libevent
2、安装memcache
3、安装php的memcache扩展
4、测试
第二部分:memcache客户端操作
1、重要操作(来源: http://blog.163.com/xiao66_fei/blog/static/1099087642012911114848150/)
|
Command |
Description |
Example |
|
get |
Reads a value |
get mykey |
|
set |
Set a key unconditionally |
set mykey 0 60 5 |
|
add |
Add a new key |
add newkey 0 60 5 |
|
replace |
Overwrite existing key |
replace key 0 60 5 |
|
append |
Append data to existing key |
append key 0 60 15 |
|
prepend |
Prepend data to existing key |
prepend key 0 60 15 |
|
incr |
Increments numerical key value by given number |
incr mykey 2 |
|
decr |
Decrements numerical key value by given number |
decr mykey 5 |
|
delete |
Deletes an existing key |
delete mykey |
|
flush_all |
Invalidate specific items immediately |
flush_all |
|
Invalidate all items in n seconds |
flush_all 900 |
|
|
stats |
Prints general statistics |
stats |
|
Prints memory statistics |
stats slabs |
|
|
Prints memory statistics |
stats malloc |
|
|
Print higher level allocation statistics |
stats items |
|
|
stats detail |
||
|
stats sizes |
||
|
Resets statistics |
stats reset |
|
|
version |
Prints server version. |
version |
|
verbosity |
Increases log level |
verbosity |
|
quit |
Terminate telnet session |
quit |
2、操作实例
[root@localhost yebin]# telnet xxx.xxx.xxx.xxx 40xxx
Trying xxx.xxx.xxx.xxx...
Connected to xxx.xxx.xxx.xxx.
Escape character is '^]'.
set key
helloworld
STORED
get key
VALUE key
helloworld
END
flush_all
OK
set name
yebin
STORED
get name
VALUE name
yebin
END
stats
STAT pid
STAT uptime
STAT time
STAT version 1.4.
STAT libevent 2.0.-stable
STAT pointer_size
STAT rusage_user 1.381789
STAT rusage_system 1.545765
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
END