In App Notification Setting

Pusher Channels provides realtime communication between servers, apps and devices. When something happens in your system, it can update web-pages, apps and devices. When an event happens on an app, the app can notify all other apps and your system

Get your free API keys Create an account , then create a Channels app. Go to the 'Keys' page for that app, and make a note of your app_id, key, secret and cluster.