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1: 把表名转换为key前缀 如, tag: 2: 第2段放置用于区分区key的字段--对应mysql中的主键的列名,如userid 3: 第3段放置主键值,如2,3,4...., a , b ,c 4: 第4段,写要存储的列名 用户表 user , 转换为key-value存储 userid username passworde email 9 Lisi 1111111 lisi@163.com set user:userid:9:username lisi set user:userid:9:password 111111 set user:userid:9:email lisi@163.com keys user:userid:9* 2 注意: 在关系型数据中,除主键外,还有可能其他列也步骤查询, 如上表中, username 也是极频繁查询的,往往这种列也是加了索引的. 转换到k-v数据中,则也要相应的生成一条按照该列为主的key-value Set user:username:lisi:uid 9 这样,我们可以根据username:lisi:uid ,查出userid=9, 再查user:9:password/email ... 完成了根据用户名来查询用户信息 windows安装配置memcache和memcached 下载memcached.exe http://code.jellycan.com/files/memcached-1.2.6-win32-bin.zip 计算机丢失msvcr71.dll问题 http://www.jb51.net/dll/26630.html http://www.jb51.net/dll/msvcr71.dll.html#down 解压后把文件dll复制到 64位系统 C:\Windows\SysWOW64 32位系统 C:\Windows\System32 memcached.exe -d install 用管理员身份运行cmd memcached.exe -d start 进入telnet localhost 11211 根据版本下载php_memcache.dll http://windows.php.net/downloads/pecl/releases/memcache/3.0.8/php_memcache-3.0.8-5.6-ts-vc11-x86.zip $mem=new Memcache; $mem->connect("localhost",11211); //pconnect长链接 //$mem->addServer("www.test.com",11221); //添加多个服务器 //$mem->addServer("192.168.1.9",11211); $mem->add("mystr","this is a memcache test!",MEMCACHE_COMPRESSED,3600); $str=$mem->get("mystr"); echo "string: ".$str."<br />"; $mem->add("myarr",array("aaa","bbb","ccc","ddd")); print_r($mem->get("myarr")); echo '<br />'; class TestC { var $name="Tom"; var $age=5; var $money=100; } $mem->add("myobj",new TestC); var_dump($mem->get("myobj")); echo '<br />'; echo $mem->getVersion()."<br />"; echo '<pre>'; print_r($mem->getStats()); echo '</pre>'; $mem->close(); http://www.phpddt.com/usr/uploads/2012/10/93872356.rar 通过这个文件中的类“memcached”对 memcached 服务进行操作了
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http://devdd.sinaapp.com/post-477.html zcount('room_user_set_', 1, '+inf'); //-inf和+inf表示最低和最高score值
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