Memcached1.4安装笔记
系统安装需求，CentOS6.5，能连接互联网，下面是安装步骤1.yum install libevent-devel
2.wget http://memcached.org/latest
3.wget http://www.memcached.org/files/memcached-1.4.20.tar.gz
下载最新的安装文件memcached-1.4.20.tar.gz
4.tar -zxvf memcached-1.4.20.tar.gz
5.cd memcached-1.4.20
6。 ./configure && make && make test && sudo make install
提示报错：
checking build system type... x86_64-unknown-linux-gnu
checking host system type... x86_64-unknown-linux-gnu
checking target system type... x86_64-unknown-linux-gnu
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... /bin/mkdir -p
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking for gcc... no
checking for cc... no
checking for cl.exe... no
configure: error: in `/opt/memcached-1.4.20':
configure: error: no acceptable C compiler found in $PATH
See `config.log' for more details.
7.yum -y install gcc
系统会下载gcc安装包，自动安装。时间较漫长，大约装30分钟。（只能吐槽国内网速）
8.yum -y install gcc-c++
再下一遍安装包，这次速度快点。
9。再次执行第6步，直到看到成功编译的提示。
......
prove ./t
make: prove: Command not found
make: *** Error 127
10.第9步报错误， 重新执行make install
没有提示错误。
11.启动和停止memcached
# ./memcached -d -m 1024 -u root -l 10.11.1.219 -p 11211 -c 256 -P /tmp/memcached.pid //启动memcached 启动参数说明：
启动参数说明：
-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，默认64MB
-Mreturn error on memory exhausted (rather than removing items)
-u是运行Memcache的用户，如果当前为root 的话，需要使用此参数指定用户。
-l 是监听的服务器IP地址，默认为所有网卡。
-p是设置Memcache的TCP监听的端口，最好是1024以上的端口
-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
-f <factor> chunk size growth factor (default: 1.25)
-I Override the size of each slab page. Adjusts max item size(1.4.2版本新增)
也可以启动多个守护进程，但是端口不能重复
停止Memcache进程：
kill `cat /tmp/memcached.pid`
12.测试memcached,
使用另外一台机器，telnet 10.11.1.219 11211
如果需要，先关闭linux防火墙。关闭linux防火墙的命令：service iptables stop
连接成功输入命令：
stats
显示正常结果，说明服务成功启动了。
stats
STAT pid 2940
STAT uptime 407
STAT time 1409821965
STAT version 1.4.20
STAT libevent 1.4.13-stable
STAT pointer_size 64
STAT rusage_user 0.000000
STAT rusage_system 0.029995
STAT curr_connections 5
STAT total_connections 6
STAT connection_structures 6
STAT reserved_fds 20
STAT cmd_get 0
STAT cmd_set 0
STAT cmd_flush 0
STAT cmd_touch 0
STAT get_hits 0
STAT get_misses 0
STAT delete_misses 0
STAT delete_hits 0
STAT incr_misses 0
STAT incr_hits 0
STAT decr_misses 0
STAT decr_hits 0
13。java客户端上的开发
java memcached client下载地址https://github.com/gwhalin/Memcached-Java-Client/downloads
将下载的ava_memcached-release_2.6.6.zip解压，jar包全部导入到java项目。
测试程序：
import java.util.ArrayList;
import com.danga.MemCached.*;
public class MyClass {
// create a static client as most installs only need
// a single instance
protected static MemCachedClient mcc = new MemCachedClient();
// set up connection pool once at class load
static {
// server list and weights
// String[] servers = { "server1.mydomain.com:1624",
// "server2.mydomain.com:1624", "server3.mydomain.com:1624" };
String[] servers = { "10.11.1.219:11211" };
// Integer[] weights = { 3, 3, 2 };
Integer[] weights = { 3};
// grab an instance of our connection pool
SockIOPool pool = SockIOPool.getInstance();
// set the servers and the weights
pool.setServers(servers);
pool.setWeights(weights);
// set some basic pool settings
// 5 initial, 5 min, and 250 max conns
// and set the max idle time for a conn
// to 6 hours
pool.setInitConn(5);
pool.setMinConn(5);
pool.setMaxConn(250);
pool.setMaxIdle(1000 * 60 * 60 * 6);
// set the sleep for the maint thread
// it will wake up every x seconds and
// maintain the pool size
pool.setMaintSleep(30);
// set some TCP settings
// disable nagle
// set the read timeout to 3 secs
// and don't set a connect timeout
pool.setNagle(false);
pool.setSocketTO(3000);
pool.setSocketConnectTO(0);
// initialize the connection pool
pool.initialize();
// lets set some compression on for the client
// compress anything larger than 64k
// mcc.setCompressEnable(true);
// mcc.setCompressThreshold(64 * 1024);
}
// from here on down, you can call any of the client calls
public static void examples() {
mcc.set("foo", "This is a test String");
ArrayList a1=new ArrayList();
a1.add(0);
a1.add(388);
a1.add(989);
a1.add("中文内容");
mcc.set("foo2", a1);
String bar = (String)mcc.get("foo");
ArrayList a2 = (ArrayList)mcc.get("foo2");
System.out.println(bar);
System.out.println(a2.toString());
}
public static void main(String[] args) {
// TODO Auto-generated method stub
MyClass cs1=new MyClass();
cs1.examples();
}
}
运行结果：
This is a test String
说明：本程序在jdk7下测试通过，由于只使用了一个节点的memcached ，所以去掉了集群配置。 版权声明：本文为博主原创文章，未经博主允许不得转载。
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