Modern system design

Hello everyone, I'm facing a design challenge while developing a system aimed for flexibility, performance, and responsiveness. I'd like to explore the viability of a specific architecture and understand its potential for scalability. I'm considering the following technologies: > * Backend: Express.js, GraphQL, gRPC, Kafka, PostgreSQL, MongoDB, Socket.IO > * Testing: Supertest, Jest > * Frontend: React > * Deployment: Docker,Kubernetes My question is: Can a system built using this combination of components achieve the desired scalability and performance? Are there any potential bottlenecks or limitations I should be aware of?"