# Hybrid Batch-Stream Processing

## Learning Cards

1. **What is Hybrid Batch-Stream Processing?**  
   Easy 2 min read

2. **How Lambda Architecture Works at Scale**  
   Medium 3 min read

3. **Kappa Architecture and Unified Engines**  
   Medium 3 min read

4. **When to Choose Hybrid vs Pure Batch or Stream**  
   Hard 3 min read

5. **Failure Modes and Edge Cases in Hybrid Systems**  
   Hard 3 min read