Microservices Pertanyaan dan Jawaban Wawancara
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Ques 21. How can microservices handle cross-cutting concerns such as logging and monitoring?
Microservices can use centralized logging and monitoring tools to aggregate logs and metrics from all services. A service mesh can also help manage cross-cutting concerns.
Example:
Using ELK Stack (Elasticsearch, Logstash, Kibana) for centralized logging.
Ques 22. Explain the concept of 'Blue-Green Deployment' in microservices.
Blue-Green Deployment is a release management strategy where two identical environments, 'Blue' (live) and 'Green' (inactive), are maintained. The switch between them allows for zero-downtime deployments.
Example:
Routing traffic from the 'Blue' environment to 'Green' after a successful deployment for testing.
Ques 23. What is the role of a 'Container' in microservices, and how does it differ from virtual machines?
Containers encapsulate an application and its dependencies, providing a lightweight and consistent runtime environment. They are more resource-efficient than virtual machines, as they share the host OS kernel.
Example:
Using Docker to containerize microservices for consistent deployment across environments.
Ques 24. Explain the 'Backends For Frontends' (BFF) pattern in microservices.
The BFF pattern involves creating specific backend services tailored for individual frontend applications to optimize data retrieval and minimize communication overhead.
Example:
Having separate backend services for mobile and web clients to meet their specific needs.
Ques 25. How does microservices architecture support fault tolerance and resilience?
Microservices can be designed with fallback mechanisms, retry strategies, and circuit breakers to handle failures gracefully. Container orchestration tools also contribute to fault tolerance.
Example:
Implementing a circuit breaker pattern to prevent cascading failures in case of a service outage.
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