Implementation of Food Delivery App using microservices architecture and DevOps

There are two types of microservices operating in this system, one communicating with data centre another one that is for real time customer. What we need is that in case of outage(limited computational capacity present) the real time microservices should keep continuing even if the datacentre ones fail. One solution for this could be dedicate more nodes and create more pod replicas for real time microservices than non essential datacentre ones.