[Event Sourcing] Trying out Sekiban DCB: Introduction

Sekiban is an open-source Event Sourcing and CQRS framework for .NET using C#, supporting Azure Cosmos DB, PostgreSQL, and AWS DynamoDB. It stores all changes as immutable events rather than just the current state. Implementation tests include features for creating students, fetching data, and managing class enrollments, where student states are reconstructed from recorded events. The framework is utilized to ensure data consistency in NoSQL systems characterized by frequent read and write operations.