Redis下载安装配置

wget http://download.redis.io/releases/redis-stable.tar.gz
tar -xvf redis-stable.tar.gz
cd redis-stable/
make
make install
./utils/install_server.sh

安装成功：

Redis服务查看、开启、关闭

ps -ef|grep redis
/etc/init.d/redis_6379 start
/etc/init.d/redis_6379 stop
service redis_6379 start
service redis_6379 stop

Yii2工程配置Redis 下载yii2-redis

在composer.json中添加

"yiisoft/yii2-redis": "~2.0.0"

并执行

composer update

配置common/config/main.php

'components' => [
        'redis' => [
            'class' => 'yii\redis\Connection',
            'hostname' => 'localhost',
            'port' => 6379,
            'database' => 0,
        ],
    ],

购物车接口

public function actionSetcart(){
    if (isset($_REQUEST['uid'])&&isset($_REQUEST['cart'])) {
        $uid = $_REQUEST['uid'];
        $cart = $_REQUEST['cart'];
        //Redis保存购物车数据：30分钟
        $redis = Yii::$app->redis;
        $redis->set('cart:'.$uid, $cart);
        $redis->expire('cart:'.$uid, 30*60);
        $result['error'] = 0;
        $result['msg'] = '保存成功';
    } else {
        $result['error'] = 1;
        $result['msg'] = '参数错误';
    }
    return $result;
}

public function actionGetcart(){
    if (isset($_REQUEST['uid'])) {
        $uid = $_REQUEST['uid'];
        //Redis保存购物车数据：30分钟
        $redis = Yii::$app->redis;
        $cart = $redis->get('cart:'.$uid);
        $result['error'] = 0;
        $result['msg'] = '获取成功';
        $result['cart'] = $cart ? $cart : '';
    } else {
        $result['error'] = 1;
        $result['msg'] = '参数错误';
    }
    return $result;
}

根据IP限制接口访问

$ip = $_SERVER['REMOTE_ADDR'];
$redis = Yii::$app->redis;
$redis_ip = $redis->get('ip:'.$ip);
if ($redis_ip) {
    # code...
} else {
    $redis->set('ip:'.$ip, TRUE);
    $redis->expire('ip:'.$ip, 60);
    # code...
}