Tutorials

Learn Hindsight through these step-by-step tutorials:

• 1. Getting Started with Hindsight
  • 1.1. Let’s Start Coding
  • 1.2. Defining Your First Event
  • 1.3. Storing Events
  • 1.4. Reading Events Back
  • 1.5. Running the Example
  • 1.6. Summary
  • 1.7. Next Steps
• 2. In-Memory Projections
  • 2.1. Prerequisites
  • 2.2. Define Domain Events
  • 2.3. Building a Simple Projection
  • 2.4. Demo: Counting Active Users
  • 2.5. Building a Richer Projection
  • 2.6. Demo: User Directory
  • 2.7. Running the Examples
  • 2.8. Summary
  • 2.9. Next Steps
• 3. PostgreSQL Projections
  • 3.1. Prerequisites
  • 3.2. Define Events
  • 3.3. Create a Projection Handler
  • 3.4. Complete Demo
  • 3.5. Running the Example
  • 3.6. Summary
  • 3.7. Next Steps
• 4. Event Versioning
  • 4.1. Prerequisites
  • 4.2. Version 0: The Original Event
  • 4.3. Version 1: Adding Email
  • 4.4. Version 2: Adding User Status
  • 4.5. Defining the Upgrades
  • 4.6. Wiring It Up
  • 4.7. How Migration Works
  • 4.8. Using Versioned Events
  • 4.9. Running the Example
  • 4.10. Summary
  • 4.11. Next Steps
• 5. Consistency Patterns
  • 5.1. The Problem: Stale Projections
  • 5.2. Prerequisites
  • 5.3. Define Bank Account Events
  • 5.4. Build a Version-Aware Projection
  • 5.5. Version-Aware Operations
  • 5.6. Demonstration
  • 5.7. Reality Check
  • 5.8. Running the Example
  • 5.9. Summary
  • 5.10. Next Steps
• 6. Backend-Agnostic Code
  • 6.1. Prerequisites
  • 6.2. Define Events
  • 6.3. Write Backend-Agnostic Functions
  • 6.4. Use with Different Backends
  • 6.5. Running the Examples
  • 6.6. Summary
  • 6.7. Next Steps
• 7. Synchronous Projections
  • 7.1. Prerequisites
  • 7.2. Define Events
  • 7.3. Synchronous Projection Handler
  • 7.4. Demonstration
  • 7.5. Trade-offs
  • 7.6. Running the Example
  • 7.7. Summary
• 8. Cross-Stream Consistency
  • 8.1. Prerequisites
  • 8.2. Pattern 1: SQL Constraints for Uniqueness
  • 8.3. Define Events
  • 8.4. Course Enrollment Example
  • 8.5. Synchronous Projection with UNIQUE Constraint
  • 8.6. Demonstration
  • 8.7. Pattern 2: Multi-Stream Transactions
  • 8.8. Demo: Multi-Stream Coordination
  • 8.9. Running the Examples
  • 8.10. Summary