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 32 0 10
helloworld
STORED
get key  
VALUE key 32 10
helloworld
END
flush_all
OK
set name 10 0 5
yebin
STORED
get name
VALUE name 10 5
yebin
END
stats
STAT pid 7436
STAT uptime 107690
STAT time 1413881141
STAT version 1.4.15
STAT libevent 2.0.21-stable
STAT pointer_size 64
STAT rusage_user 1.381789
STAT rusage_system 1.545765
STAT curr_connections 5
STAT total_connections 271
STAT connection_structures 8
STAT reserved_fds 20
STAT cmd_get 248
STAT cmd_set 4
STAT cmd_flush 1
STAT cmd_touch 0
STAT get_hits 2
STAT get_misses 246
STAT delete_misses 0
STAT delete_hits 0
STAT incr_misses 0
STAT incr_hits 0
STAT decr_misses 0
STAT decr_hits 0
STAT cas_misses 0
STAT cas_hits 0
STAT cas_badval 0
STAT touch_hits 0
STAT touch_misses 0
STAT auth_cmds 0
STAT auth_errors 0
STAT bytes_read 7968
STAT bytes_written 1873
STAT limit_maxbytes 536870912
STAT accepting_conns 1
STAT listen_disabled_num 0
STAT threads 4
STAT conn_yields 0
STAT hash_power_level 16
STAT hash_bytes 524288
STAT hash_is_expanding 0
STAT bytes 75
STAT curr_items 1
STAT total_items 2
STAT expired_unfetched 0
STAT evicted_unfetched 0
STAT evictions 0
STAT reclaimed 1
END