Module 4: Choreography and Orchestration

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Choreography and Orchestration

Graded Assignment

1. Which of the following are benefits of the service choreography pattern? Select two.

  • Services are loosely coupled. ✅
  • Business logic is easy to understand.
  • An event producer maintains full control over downstream operations.
  • Service choreography allows for decentralized control. ✅

Explanation:

  • Loosely coupled services → Each service reacts to events without direct dependencies on other services.
  • Decentralized control → No central orchestrator; services react based on predefined rules, making the system more scalable and flexible.

2. Which of the following are features of Eventarc? Select two.

  • Applications handle events by monitoring the events that are published to an event queue.
  • Pub/Sub is the transport layer. ✅
  • Event formats are flexible as long as the formatting is identical for all events of a particular type.
  • Eventarc can generate events for entries written to Cloud Audit Logs. ✅

Explanation:

  • Eventarc uses Pub/Sub to deliver events between services.
  • Cloud Audit Logs integration allows capturing important actions for monitoring and security.

3. Which of the following are features of Workflows? Select two.

  • A workflow provides a decentralized view of event communication.
  • Workflows supports long-running processes. ✅
  • The state of each workflow execution is observable. ✅
  • A workflow is appropriate only for simple business processes.

Explanation:

  • Long-running process support → Workflows can manage complex, multi-step business processes over time.
  • Execution state observability → Each execution has logs and monitoring, making debugging easier.

4. Which of the following are features of Cloud Tasks? Select two.

  • The creator of a task has no control over which endpoint receives the task.
  • HTTP destinations may be called by automatically attaching a token for the Cloud Tasks service account.
  • Tasks can be scheduled for delivery at a future time. ✅
  • At-least-once delivery is guaranteed. ✅

Explanation:

  • Scheduled task execution allows you to delay execution until a specified time.
  • At-least-once delivery ensures that tasks are not lost, even if they need to be retried.

Related contents:

Module 2: Introduction to Microservices
Module 3: Event-Driven Applications

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