Websocket Microservice Exploration

This is an exploration on Websocket Server for real-time communication between Frontend and Backend.

Article	Sample Codes
Building a Websocket Server in Microservice Architecture	01-basic-websocket-server
Design Considerations for Scaling Websocket Server Horizontally with Publish-Subscribe Pattern Implement a Scalable WebSocket Server with Spring Boot, Redis Pub/Sub, and Redis Streams	02-scaling-websocket-server