Overview
This document outlines the core architecture of our system. It’s designed for scalability, resilience, and maintainability. The system is built around a microservices architecture, communicating primarily through asynchronous messaging.
Data Layer
The data layer consists of a combination of relational and NoSQL databases. PostgreSQL is used for transactional data requiring strong consistency, while MongoDB provides flexibility for storing unstructured data.
Application Layer
The application layer contains the core business logic, implemented as a series of microservices. These services are developed using Java and Spring Boot, leveraging RESTful APIs for communication. Services are deployed using Docker containers and orchestrated with Kubernetes.
API Gateway
The API Gateway acts as a single entry point for all external requests. It handles authentication, authorization, rate limiting, and request routing to the appropriate microservices.
Message Queue
An asynchronous message queue (RabbitMQ) facilitates communication between microservices, ensuring loose coupling and resilience. Services publish and consume messages to exchange data and trigger events.