Linux Memcached installation

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

To install memcached on Linux system, you must first install the 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

Download the latest version of memcached from 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 Run

Run the Memcached command:

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

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

Startup options:

• -d is to start a daemon process;

• -m is The amount of memory allocated to Memcache, in MB;

• -u is the user running Memcache;

• -l is the listening server IP address, there can be multiple addresses;

• -p is to set the port Memcache listens on, preferably a port above 1024;

• -c is the maximum number of running concurrent connections, the default is 1024;

• -P is to set the pid file to save Memcache.

(1) Run as a foreground program:

Enter the following command from the terminal to 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)

Debug information is displayed here. In this way, memcached is started in the foreground, listening on TCP port 11211, and the maximum memory usage is 64M. The content of debugging information is mostly about stored information.

(2) Run 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