memcache运维整理

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