memcached

[wittyResry]

• https://github.com/libevent/libevent/wiki
• https://github.com/memcached/memcached/wiki
• 先安装libevent再安装memcached。

启动Memcached服务：  
1.启动Memcache的服务器端：  
# /usr/local/bin/memcached -d -m 256 -u root -l 127.0.0.1 -p 12000 -c 256 -P /tmp/memcached.pid  
(对外网 /usr/local/bin/memcached -d -m 256 -u weblogic -l 0.0.0.0 -p 12000 -c 256 -P /tmp/memcached.pid)  

-d选项是启动一个守护进程  
-m是分配给Memcache使用的内存数量，单位是MB  
-u是运行Memcache的用户，我这里是root  
-l是监听的服务器IP地址  
-p是设置Memcache监听的端口  
-c选项是最大运行的并发连接数，默认是1024  
-P是设置保存Memcache的pid文件，我这里是保存在 /tmp/memcached.pid，  

2.如果要结束Memcache进程，执行： 
# kill `cat /tmp/memcached.pid`  
3. test
➜ memcached-1.4.36 /usr/local/bin/memcached -d -m 256 -u root -l 127.0.0.1 -p 12000 -c 256 -P /tmp/memcached.pid
➜  memcached-1.4.36 telnet localhost 12000
Trying ::1...
telnet: connect to address ::1: Connection refused
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
set key 0 1 4
resry
CLIENT_ERROR bad data chunk
ERROR
set key1 0 60 4
zhou
STORED
get key1
VALUE key1 0 4
zhou
END
set key1 0 60 5
resry
STORED
get key1
VALUE key1 0 5
resry
END

伪分布式
➜  scripts /usr/local/bin/memcached -d -m 16 -u root -l 127.0.0.1 -p 12000 -c 256 -P /tmp/memcached.pid  
➜  scripts /usr/local/bin/memcached -d -m 16 -u root -l 127.0.0.1 -p 12001 -c 256 -P /tmp/memcached.pid  
➜  scripts /usr/local/bin/memcached -d -m 16 -u root -l 127.0.0.1 -p 12002 -c 256 -P /tmp/memcached.pid  
➜  scripts ps -ef|grep memcached
  501 65864     1   0 10:08下午 ??         0:00.03 /usr/local/bin/memcached -d -m 16 -u root -l 127.0.0.1 -p 12000 -c 256 -P /tmp/memcached.pid
  501 65872     1   0 10:08下午 ??         0:00.02 /usr/local/bin/memcached -d -m 16 -u root -l 127.0.0.1 -p 12001 -c 256 -P /tmp/memcached.pid
  501 65879     1   0 10:08下午 ??         0:00.02 /usr/local/bin/memcached -d -m 16 -u root -l 127.0.0.1 -p 12002 -c 256 -P /tmp/memcached.pid
  501 65887 42282   0 10:08下午 ttys012    0:00.00 grep --color=auto --exclude-dir=.bzr --exclude-dir=CVS --exclude-dir=.git --exclude-dir=.hg --exclude-dir=.svn memcached
➜  scripts cat /tmp/memcached.pid
65879