阿里云Memcache
系统概要
分布式缓存管理-Memcache 是ACE为开发者提供的分布式缓存服务，用来以共享的方式缓存用户的key-value形式的小数据，以加快数据响应，减轻后端存储的压力。
分布式缓存管理-memcache模块主要提供以下功能：
1、 初始化memcache连接
2、 获取memcache数据
3、写入memcache数据
4、刷新memcache数据
使用指南
实用接口：
bool Memcache::init ()
array Memcache::get ( array $keys [, array &$flags ] )
bool Memcache::set ( string $key , mixed $var [, int $flag [, int $expire ]] )
bool add ( string $key , mixed $var [, int $flag [, int $expire ]] )
bool replace ( string $key , mixed $var [, int $flag [, int $expire ]] )
bool decrement ( string $key [, int $value = 1 ] )
bool increment ( string $key [, int $value = 1 ] )
bool delete ( string $key [, int $timeout = 0 ] )
bool close ()
空接口：
bool addServer* *( string $host [, int $port = 11211 [, bool $persistent [, int $weight [, int $timeout [, int $retry_interval [, bool$status [, callback $failure_callback [, int $timeoutms ]]]]]]]] )
bool connect* *( string $host [, int $port [, int $timeout ]] )
bool flush* *( void )
bool* *pconnect ( string $host [, int $port [, int $timeout ]] )
bool setServerParams* *( string $host [, int $port = 11211 [, int $timeout [, int $retry_interval = false [, bool $status [, callback$failure_callback ]]]]] )
用例
$mem = new Memcache;
$mem->init();
$mem->set('key6', 'hello', 0, 120);
$val = $mem->get('key6');
echo "Get key6 value:".$val."
";
$mem->add('key7', 'welcome you', 0, 120);
$val = $mem->get('key7');
echo "Get add key7 value:".$var."
";
$mem->set('key7', 'welcome', 0, 120);
$val = $mem->get('key7');
echo "Get key7 value:".$val."
";
$mem->set('key8', 'thanks', 0, 120);
$val = $mem->get('key8');
echo "Get key8 value:".$val."
";
$mem->replace('key8', 'thank you', false, 120);
$val = $mem->get('key8');
echo "Get replace key8 value:".$val."
";
$mem->delete('key6');
$val = $mem->get('key6');
echo "Get key6 value after delete:".$val."
";
$mem->close();
?>