Memcached 部署

一、Memcached 部署

1.1 yum安装memcached

yum install -y memcached
useradd memcached -s /sbin/nologin

1.2 编译安装

wget http://memcached.org/latest
tar -xf memcached-1.x.x.tar.gz
cd memcached-1.x.x
./configure --prefix=/apps/memcached && make && make test && make install

1.3 配置文件

/etc/sysconfig/memcached

PORT="11211"
USER="memcached"
MAXCONN="1024"
#最大并发连接数
CACHESIZE="64"
OPTIONS="-l 127.0.0.1,::1"
#OPTIONS="-l 127.0.0.1,::1"
#注释掉，修改为监听地址全部地址。

1.4 systemd-service文件

[Unit]
Description=memcached daemon
Before=httpd.service
After=network.target

[Service]
EnvironmentFile=/etc/sysconfig/memcached
ExeStart=/apps/memcached/bin/memcached --p ${PORT} -u ${USER} -m ${CACHESIZE} -c ${MAXCONN} $OPTIONS

[Install]
WantedBy=multi-user.target

二、测试

2.1使用telnet连接memcache

telnet 127.0.0.1 11211
#连接memcache

stats
#查看memcache状态信息

2.2 常用命令

• set

  set <key> <flag> <expiration time> <bytes>
  <value>
  
  set name 100 0 5
  jacky
  #0永久有效 单位s

• add
• replace

• get

  get <key>
  
  get name

• delete

启动命令

memcached -f 2 -p 12345 -vv -u memcached -m 2048
#-f 增长因子
#-p 指定监听端口
#-vv 显示
#-u 指定用户运行
#-m 指定内存占用 单位m

2.3 访问memcached的python代码

#!/usr/bin/python3
#coding:utf-8
import memcache
m = memcache.Client(['127.0.0.0.1:11211'], debug=True)
for i in range(10):
 m.set("key%d" % i,"v%d" % i)
 ret = m.get ('key%d' % i)
 print("%s" % ret)