QUEUE_CONNECTION=redis需要安装redis扩展，自行完成.
php artisan make:job ProcessPodcast
ProcessPodcast::dispatch($podcast);同步调度
ProcessPodcast::dispatchNow($podcast);ProcessPodcast::withChain([
new OptimizePodcast,
new ReleasePodcast
])->dispatch();ProcessPodcast::dispatch($podcast)->onQueue('processing');php artisan queue:work
//自定义分发
php artisan queue:work redis --queue=emails
php artisan queue:failed-table
php artisan migrate
php artisan queue:work redis --tries=3https://github.com/kong-qi/laravel_study_video_course
下载课件：
https://github.com/kong-qi/laravel_study_video_course/releases
