Part 3: Core Concepts

This part provides a deep dive into EventCore’s core concepts and design principles. Understanding these concepts will help you build robust, scalable event-sourced systems.

Chapters in This Part

1. Commands and the Macro System - Deep dive into command implementation
2. Events and Event Stores - Understanding events and storage
3. State Reconstruction - How EventCore rebuilds state from events
4. Multi-Stream Atomicity - The key innovation of EventCore
5. Error Handling - Comprehensive error handling strategies

What You’ll Learn

• How the #[derive(Command)] macro works internally
• Event design principles and best practices
• The state reconstruction algorithm
• How multi-stream atomicity is guaranteed
• Error handling patterns for production systems

Prerequisites

• Completed Part 2: Getting Started
• Basic understanding of Rust macros helpful
• Familiarity with database transactions

Time to Complete

• Reading: ~30 minutes
• With examples: ~1 hour

Ready to dive deep? Let’s start with Commands and the Macro System →