Main Features
1. Implemented the server in JAVA and client in Python.
2. Used the Java Netty Framework for the communication between server and client. Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients
3. Implemented RAFT algorithm from scratch - We had multiple worker threads in a thread pool to manage the incoming requests, Leader selection from the internal servers connected including re-election if a leader fails thus ensuring fault tolerance and availability.
4. Used UDP discovery for discovering nearby external servers from other teams(cross connections) so as to allow message from users registered with a different server. Used Google Protobuf for server to server communication instead of JSON to avoid nesting and decreasing the amount of data to be sent over network.
5. Mongo DB used as the backend database to store these messages.