一、安装
//安装 [root@memcached ~]# yum install -y epel-release [root@memcached ~]# yum install -y libevent mencached libmemcached [root@memcached ~]# /etc/init.d/memcached start [root@memcached ~]# ps aux|grep memcached 495 2641 0.2 0.0 56280 900 ? Ssl 01:06 0:00 memcached -d -p 11211 -u memcached -m 64 -c 1024 -P /var/run/memcached/memcached.pid root 2649 0.0 0.0 5980 740 pts/0 S+ 01:06 0:00 grep memcached
二、基本选项
-d 启动一个守护进程 { 一般后面不加内容} -m 分配memcache使用的内存数量，单位：M -u 运行memcache的用户 {如果当前为root，则需要指定用户} -l 监听的服务器ip地址 -p 监听memcache的端口 {默认为11211} -c 最大运行的并发连接数 {默认是1024} -P 保存memcache的pid文件
三、查看memcached的运行状态
[root@memcached ~]# memcached-tool 127.0.0.1:11211 stats #127.0.0.1:11211 Field Value accepting_conns 1 auth_cmds 0 auth_errors 0 bytes 0 bytes_read 7 bytes_written 0 cas_badval 0 cas_hits 0 cas_misses 0 cmd_flush 0 cmd_get 0 cmd_set 0 conn_yields 0 connection_structures 11 curr_connections 10 curr_items 0 decr_hits 0 decr_misses 0 delete_hits 0 delete_misses 0 evictions 0 get_hits 0 get_misses 0 incr_hits 0 incr_misses 0 limit_maxbytes 67108864 listen_disabled_num 0 pid 2641 pointer_size 32 rusage_system 0.062990 rusage_user 0.024996 threads 4 time 1461086392 total_connections 11 total_items 0 uptime 791 version 1.4.4 //常查看的参数是： --> get_hits 有多少数据是直接从缓存中取得 cmd_get cmd_set
OR
[root@memcached ~]# memstat --servers=127.0.0.1:11211 Listing 1 Server Server: 127.0.0.1 (11211) pid: 2641 uptime: 1473 time: 1461087074 version: 1.4.4 pointer_size: 32 rusage_user: 0.50992 rusage_system: 0.122981 curr_items: 0 total_items: 0 bytes: 0 curr_connections: 10 total_connections: 12 connection_structures: 11 cmd_get: 0 cmd_set: 0 get_hits: 0 get_misses: 0 evictions: 0 bytes_read: 0 bytes_written: 0 limit_maxbytes: 67108864 threads: 4