加redis锁

application/api/controller/Index.php

@@ -18,6 +18,8 @@ class Index extends Api
      */
     public function index()
     {
+        echo "111";
+        exit();
         $list = Db::name('user')->where('status','normal')->select();
         foreach ($list as $key => $value) {
             $amount = Db::name('transaction_record')->where('type',2)->where('user_id', $value['id'])->sum('amount');

application/api/controller/Order.php

@@ -18,7 +18,7 @@ use Yansongda\Pay\Exceptions\GatewayException;
 use app\admin\model\transaction\Record;
 use think\Log;
 use addons\shopro\traits\CouponSend;
-
+use think\Cache;
 /**
  * 首页接口
  */
@@ -27,7 +27,7 @@ class Order extends Api
     use CouponSend;
     protected $noNeedLogin = ['callback'];
     protected $noNeedRight = ['*'];
-
+    const CACHE_TIME = 5;
     /**
      * 首页
      *
@@ -237,19 +237,23 @@ class Order extends Api
      * @return [type] [description]
      */
     public function createOrder(){
+
         $address_id = $this->request->post("address_id", 0);
         $goods_id = $this->request->post("goods_id", 0);
         $num = $this->request->post("num", 1);
         $coupon_id = $this->request->post("coupon_id", 0);
         $user_id = $this->auth->id;
         $user = $this->auth->getUserinfo();
+        //var_dump($user_id);
+        
+        
         $address = Address::where('id', $address_id)->where('user_id', $user_id)->find();
         if (!$address) {
             $this->error("收货地址不存在");
         }
         $goods = Goods::where('id', $goods_id)->where('status','normal')->find();
         if (!$goods) {
-            $this->error("商品不存在");
+            $this->error("商品已被抢完");
         }
         $warehouse = Warehouse::where('id', $goods['warehouse_id'])->find();
         $this->getBuyTime($warehouse, $user);
@@ -259,11 +263,17 @@ class Order extends Api
         if (time() > strtotime($warehouse['end'])) {
             $this->error("抢购时间已结束!");
         }
+        //使用redis锁，限制下单
+        $lock_key = "createOrder_".$goods_id;
+        $res = Cache::store('redis')->setnx($lock_key, 1);
+        
+        if (!$res) {
+            $this->error("您的手速太慢了，商品已被抢!");
+        }
+        Cache::store('redis')->expire($lock_key, self::CACHE_TIME);
         //exit();
         $order_amount = $goods['price'] * $num;
         $coupon_price = 0;
-        
-
         $pay_amount = $order_amount - $coupon_price;
         $order_sn = "ZH".date("YmdHis").rand(1000,9999);
         //创建订单
@@ -301,21 +311,17 @@ class Order extends Api
         if ($ret === false) {
             $this->error("下单失败");
         }
-        //使用优惠卷
-        $ret = UserCouponModel::where("id", $coupon_id)->update(['use_order_id' => $order->id, 'use_time' => time()]);
-        if ($ret === false) {
-            $this->error("下单失败");
-        }
+        //更新商品状态为下架
+        Goods::where('id', $goods_id)->update(['status' => 'hidden', "updatetime" => time()]);
+
         //分佣给买家上级
         $site = Config::get("site");
         $commission = bcmul($order_amount, $site['primary_distribution'] * 0.01, 2);
         $obj = new UserService();
         $obj->userCommission(0, $this->auth->getUserinfo(), $order_sn, $commission);
-        //更新商品状态为下架
-        Goods::where('id', $goods_id)->update(['status' => 'hidden', "updatetime" => time()]);
-        
        
         
+        Cache::store('redis')->rm($lock_key);
         $this->success("succ");
     }
     /**

application/config.php

@@ -183,11 +183,23 @@ return [
     // +----------------------------------------------------------------------
     // | 缓存设置
     // +----------------------------------------------------------------------
+    // 'cache'                  => [
+    //     // 驱动方式
+    //     'type'   => 'File',
+    //     // 缓存保存目录
+    //     'path'   => CACHE_PATH,
+    //     // 缓存前缀
+    //     'prefix' => '',
+    //     // 缓存有效期 0表示永久缓存
+    //     'expire' => 0,
+    // ],
+    
     'cache'                  => [
         // 驱动方式
-        'type'   => 'File',
-        // 缓存保存目录
-        'path'   => CACHE_PATH,
+        'type'   => 'redis',
+        'host'   => '127.0.0.1',
+        'port'   => '6379',
+        'password' => '',
         // 缓存前缀
         'prefix' => '',
         // 缓存有效期 0表示永久缓存

thinkphp/library/think/cache/driver/Redis.php

@@ -185,4 +185,25 @@ class Redis extends Driver
         return $this->handler->flushDB();
     }
 
+    /**
+     * 设置一个key,如果key存在,不做任何操作.
+     * @param unknown $key
+     * @param unknown $value
+     */
+    public function setnx($name, $value)
+    {
+        $key = $this->getCacheKey($name);
+        return $this->handler->setnx($key, $value);
+    }
+    /**
+     * 设置一个key,如果key存在,不做任何操作.
+     * @param unknown $key
+     * @param unknown $value
+     */
+    public function expire($name, $expire)
+    {
+        $key = $this->getCacheKey($name);
+        return $this->handler->expire($key, $expire);
+    }
+
 }