how to change DatabaseManager to connection pool

[dogifyc]

Hey guys, since I imported laravel-s (an out-of-box swoole integration to laravel) to my project based on laravel 8.x, I've been hit by a big problem.

Laravel register DatabaseManager as a Singleton in Illuminate\Database\DatabaseServiceProvider.

$this->app->singleton('db', function ($app) {
    return new DatabaseManager($app, $app['db.factory']);
});

All sql queries in my project now seems to be in a queue. One sql must wait until previous sql to be done. That was a disaster.

My poor knowledge reserve told me connection pool will be a good idea. But laravel'is singleton DatabaseManager stop me.Is there any idea to change DatabaseManager to use connection pool instead of connection cache?Or any other ideas?