Swoft 缓存及Redis使用

配置

修改 /config/properties/cache.php 文件

return [
    'redis'     => [
        'name'        => 'redis',
        'uri'         => [
            '127.0.0.1:6379'
        ],
        'minActive'   => 8,
        'maxActive'   => 8,
        'maxWait'     => 8,
        'maxWaitTime' => 3,
        'maxIdleTime' => 60,
        'timeout'     => 8,
        'db'          => 0,
        'prefix'      => '',
        'serialize'   => 0,
    ],
    'demoRedis' => [
        'db'     => 2,
        'prefix' => 'demo_redis_',
    ]
];

redis可以配置多个实例，相同的配置仅需要在第一个实例配置一次即可

基本用法

获取redis对象：

• 通过cache()函数

cache()->get('google');

• 通过注入的方法：Inject(“实例名”)，不填则使用默认

/**
 * @Inject()
 * @var \Swoft\Redis\Redis
 */
private $redis;

获取到redis对象后就可以调用下面的方法操作redis

class RedisController
{
    /**
     * @Inject()
     * @var \Swoft\Redis\Redis
     */
    private $redis;
    /**
     * @Inject("demoRedis")
     * @var \Swoft\Redis\Redis
     */
    private $demoRedis;

    public function set(){
        return $this->redis->set('apple','www.apple.com');
    }

    public function get(){
        return cache()->get('google');
    }

    public function set2(){
        return $this->demoRedis->set('google','www.google.com');
    }

    public function get2(){
        return $this->demoRedis->get('google');
    }

    public function hSet(){
        return $this->redis->hSet('website','google','www.google.com');
    }

    public function hGet(){
        return $this->redis->hGet('website','google');
    }

    public function hMset(){
        $websites = [
            'sina' => 'www.sina.com.cn',
            'baidu' => 'www.baidu.com'
        ];
        return cache()->hMset('website',$websites);
    }

    public function hMget(){
        return cache()->hMget('website',['baidu','google']);
    }

}

实际应用

1. 队列操作，队列存放10条商品记录，每次插入一条新记录就会删除掉一条最老的记录

    /**
     * @return array
     */
    public function queuein(){
        //$data 模拟从数据库中查询出的数据
        $data = [
            'id' => rand(1,9999),
            'goods_name' => '商品'.rand(0,99999),
            'create_time' => date('Y-m-d')
        ];
        $this->redis->lPush('goods',json_encode($data));
        $this->redis->lTrim('goods',0,10);
        $goods = array();
        foreach($this->redis->lRange('goods',0,10) as $item){
            $goods[] = json_decode($item);
        }
        return $goods;
    }

2. 图片点赞，如果redis中存在该图片记录，则对应的赞 +1，如不存在则从数据库中查出然后存入redis

    /**
     * @RequestMapping(route="thumb/{id}")
     */
    public function thumb($id){
        if($this->redis->exists('img_'.$id)){
            $this->redis->hIncrBy('img_'.$id,'img_prise',1);
        }else{
            //$data 模拟从数据库中查询出的数据
            $data = [
                'img_id' => $id,
                'img_prise' => rand(1,999),
                'img_url' => md5(rand(999,99999))
            ];
            $this->redis->hMset('img_'.$id,$data);
        }
        return $this->redis->hMget('img_'.$id, ['img_id','img_prise','img_url']);
    }