1. Introduction
  4. Quick DDD Primer
  7. Actor Systems
    1. What is an Actor System?
    2. Why Choose an Actor Model?
    3. Key Advantages of Actors
    4. System Maintainability
  9. Actors
    1. Message Passing
    2. Mailboxes
    3. Communication Channels
  11. System Design
    1. Supervision
    2. Direct Actor Communication
    3. Pub/Sub Communication
    4. Hybrid Communication
      1. Request-Response
  13. Messaging Concepts
    1. Correlation IDs
    2. Tell
    3. Ask
    4. Kinds of Messages
    5. Dead Letters
  15. Persistance
    1. Journal
    2. Snapshots
    3. Actor Recovery
  17. Testing
  18. Design Patterns
    1. Resilience
      1. Circuit Breaker
      2. Backoff
      3. Retry
      4. Throttling
      5. Timeout
      6. Fail Fast
    3. Isolation and Resource Protection
      1. Bulkhead
      2. Load shedding
      3. Rate Limiting
      4. Mailbox Control
    5. Message Routing and Delivery
      1. Dead Letter Queue
      2. Scatter-Gather
      3. Sharding
      4. Consistent Hashing
    7. State and Lifecycle Management
      1. Passivation
      2. Event Sourcing
      3. State Machines
      4. Lifecycle Hooks
    9. Coordination and Workflow
      1. Workflow Coordinator
      2. Saga
      3. FSM
      4. Stashing
      5. Aggregator
    11. Distribution and Scalability
      1. Cluster Singleton
      2. Cluster Sharding
      3. Replication
      4. Partitioning
      5. Service Discovery
    13. Monitoring and Observability
      1. Health Probes
      2. Actor Logging
      3. Dead Letter Monitoring
      4. Circuit State Reporting