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Linux Memcached installation

Memcached supports many platforms: Linux, FreeBSD, Solaris, Mac OS, can also be installed on Windows.

Linux systems install memcached, first of all have to install libevent library. 

sudo apt-get install libevent libevent-deve          自动下载安装（Ubuntu/Debian）

yum install libevent libevent-deve                      自动下载安装（Redhat/Fedora/Centos）

Install Memcached

Automatic installation

Ubuntu / Debian

sudo apt-get install memcached

Redhat / Fedora / Centos

yum install memcached

FreeBSD

portmaster databases/memcached

Source code installation

Memcached download the latest version of its official website (http://memcached.org). 

wget http://memcached.org/latest                    下载最新版本

tar -zxvf memcached-1.x.x.tar.gz                    解压源码

cd memcached-1.x.x                                  进入目录

./configure --prefix=/usr/local/memcached           配置

make && make test                                   编译

sudo make install                                   安装

Memcached runs

Memcached command is run: 

$ /usr/local/memcached/bin/memcached -h                           命令帮助

Note: If you use the automatic install memcached command is located in/ usr / local / bin / memcached .

Startup options:

  • -d is to start a daemon;
  • -m is the amount of memory assigned to use Memcache, the unit is MB;
  • -u user is running Memcache;
  • -l is listening server IP addresses, you can have more than one address;
  • -p is set Memcache listening port ,, preferably above 1024;
  • -c is the maximum number of concurrent connections to run, the default is 1024;
  • -P Is set Memcache save the pid file.

(1) as a foreground program is running:

Enter the following command from the terminal, start memcached: 

/usr/local/memcached/bin/memcached -p 11211 -m 64m -vv

slab class   1: chunk size     88 perslab 11915

slab class   2: chunk size    112 perslab  9362

slab class   3: chunk size    144 perslab  7281

中间省略

slab class  38: chunk size 391224 perslab     2

slab class  39: chunk size 489032 perslab     2

<23 server listening

<24 send buffer was 110592, now 268435456

<24 server listening (udp)

<24 server listening (udp)

<24 server listening (udp)

<24 server listening (udp)

This shows the debug information. This starts in the foreground of memcached, listening on TCP port 11211, the maximum memory usage for the 64M. Much information about the debugging information is stored.

(2) runs as a background service program: 

# /usr/local/memcached/bin/memcached -p 11211 -m 64m -d

or 

/usr/local/memcached/bin/memcached -d -m 64M -u root -l 192.168.0.200 -p 11211 -c 256 -P /tmp/memcached.pid