Domain-Modeling

Building a Robust Reservation System with Event-Driven Architecture In this post, I’ll guide you through creating a scalable reservation system using event-driven architecture. We’ll explore domain modeling, event handling, and message processing - essential concepts for modern distributed systems. The Reservation Process Flow Let’s start by visualizing the reservation workflow with a Mermaid diagram: flowchart TD A[Start Reservation Process] --> B[Receive Reservation Request] B --> C{Validate Request} C -->|Valid| D[Check Availability] C -->|Invalid| E[Return Error to Client] D --> F{Availability?} F -->|Available| G[Create Reservation] F -->|Not Available| H[Notify Client of Unavailability] G --> I[Send Confirmation via Wolverine] H --> I I --> J[Store Reservation in Postgres] J --> K[Return Success Response to Client] E --> L[End Process] K --> L This diagram shows the end-to-end process from receiving a request to returning a response, with key decision points and actions along the way. ...

1. Define Your Requirements Before diving into code, clarify the system’s core functionalities. For a reservation system, we might consider: Booking Management: Creating, updating, and canceling reservations. Availability Checking: Ensuring that double-booking or conflicts are prevented. Customer Management: Handling user details, authentication, and notifications. Resource or Venue Management: Tracking the items or spaces being reserved. Concurrency Control: Managing simultaneous booking attempts (e.g., using transactions and locks). Understanding these requirements will help guide your design decisions. ...