update

@@ -82,12 +82,22 @@ class SyncSubmitTask extends Command
     public function getTaskId()
     public function getTaskId()
     {
     {
         $task_id = Redis::rpop('sync_submit_task');
         $task_id = Redis::rpop('sync_submit_task');
+        $lockKey = 'lock_sync_submit_task';
         if (empty($task_id)) {
         if (empty($task_id)) {
-            $ids = SyncSubmitTaskModel::where('status', 0)->limit(100)->pluck('id');
-            foreach ($ids as $id) {
-                Redis::lpush('sync_submit_task', $id);
+            // 获取锁
+            if (Redis::setnx($lockKey, 1)) {
+                // 设置锁的过期时间，防止死锁
+                Redis::expire($lockKey, 10);
+                $ids = SyncSubmitTaskModel::where('status', 0)->limit(100)->pluck('id');
+                foreach ($ids as $id) {
+                    Redis::lpush('sync_submit_task', $id);
+                }
+                $task_id = Redis::rpop('sync_submit_task');
+                Redis::del($lockKey);
+            } else {
+                // 未获取到锁
+                return '';
             }
             }
-            $task_id = Redis::rpop('sync_submit_task');
         }
         }
         return $task_id;
         return $task_id;
     }
     }