Chapter 3: Microservices Coordination

This directory contains the blog post about orchestrating microservices dependencies without the chaos using Tasker's sophisticated coordination capabilities.

📝 Blog Post

• blog-post.md - The main blog post content

🧪 Tested Code Examples

All code examples for this blog post are now tested and validated in the main Tasker repository:

• Complete Working Examples - All step handlers, configurations, and tests

• YAML Configuration - Complete task configuration with service coordination

• Step Handlers - All Ruby step handler implementations including circuit breaker patterns

• Circuit Breaker Documentation - Detailed explanation of Tasker's SQL-driven circuit breaker architecture

• RSpec Tests - Complete test suite proving all examples work

🏃‍♂️ Quick Start

# Clone the repository
git clone https://github.com/tasker-systems/tasker.git
cd tasker/spec/blog/post_03_microservices_coordination

# Run the setup
./setup-scripts/setup.sh

# Run the microservices demo
./demo/user_registration_demo.rb

📊 What's Tested

• ✅ Service orchestration across multiple APIs

• ✅ Correlation ID tracking for distributed debugging

• ✅ Circuit breaker patterns with typed error handling

• ✅ Idempotent operations across service boundaries

• ✅ Graceful degradation when services are unavailable

• ✅ SQL-driven coordination state management

🔗 Related Files

• TESTING.md - Testing approach and scenarios

• setup-scripts/ - Setup and demo scripts

• preview.md - Blog post preview

🎯 Key Takeaways

The examples demonstrate:

1. Service orchestration patterns with API step handlers

2. SQL-driven circuit breaker architecture (superior to in-memory patterns)

3. Typed error handling for intelligent retry logic

4. Correlation ID tracking for distributed debugging

5. Idempotent operations across service boundaries

6. Graceful degradation strategies

All code is production-ready and thoroughly tested in the Tasker engine.