Server Requirements for Laravel App

Hey Guys,

I've a laravel application where I've implemented OAuth server including below stuffs:

• 2 Redis Instances
• NodeJS
• Socket
• Supervisor

My main purpose is event real-time broadcasting and job queuing with redis.

Please let me suggest some server requirements to host the app. Currently it is hosted on digital ocean 512 MB droplet but seems it is over killing the infrastructures.