在Redis中，集群，如果你有很多键，建议扫描而不是键。但是，你应该正确使用它。试着用这种方式。

use Illuminate\Support\Facades\Redis;

$cursor = '0'; // Start with initial cursor

do {
    // Scan for keys with current cursor
    list($cursor, $keys) = Redis::scan($cursor);

    foreach ($keys as $key) {
      echo "Key: $key\n";
   }
} while ($cursor !== '0'); // Continue scanning until cursor is '0'

参考：Laravel and redis scan