Develop the core of a double-entry accounting system using advanced software architecture patterns. Instead of storing current balances, the system will store every transaction (debit/credit) as an immutable 'event' in an event store. The system will use the Command and Query Responsibility Segregation (CQRS) pattern, having a 'write side' for posting new transactions and a separate, optimized 'read side' for generating reports like balance sheets and account statements by replaying events.
What you'll build
This project entails building a sophisticated, enterprise-grade financial ledger system from the ground up using C# and the .NET platform. You will implement advanced architectural patterns like Event Sourcing (ES) and Command Query Responsibility Segregation (CQRS) to create a system that is not only performant and scalable but also inherently auditable. Instead of storing the current state (e.g., an account's balance), the system will record every single financial transaction as an immutable event in a sequential log called an event store. This creates a perfect, verifiable history of everything that has ever happened. The CQRS pattern will be used to separate the logic for handling commands (actions that change state, like posting a transaction) from the logic for handling queries (requests for data, like fetching a balance sheet). This separation allows for optimizing the read and write paths independently. The project also heavily emphasizes Domain-Driven Design (DDD) to model the complex financial domain accurately.
Enhancements & Scope: To make this project portfolio-worthy and a potential business foundation, the roadmap includes steps for implementing robust testing, optimistic concurrency control to prevent data corruption, advanced analytical reporting (e.g., Profit & Loss statements), and containerization with Docker for modern deployment readiness. The final system will be a powerful, resilient core for any financial application.
What you'll learn
Roadmap
11 steps · 91 tasks
