Question: What are the key differences between monolithic and microservices architectures?
Answer: Monolithic architectures bundle all services into a single unit, making deployment and scaling more complex. Microservices architectures, on the other hand, break down applications into smaller, independent services, which can be developed, deployed, and scaled independently. This leads to better fault isolation and more flexible scaling options.
Question: What are some effective deployment strategies for microservices?
Answer: Effective deployment strategies for microservices include Blue-Green Deployments, Canary Releases, and Rolling Updates. Blue-Green Deployments involve maintaining two production environments (Blue and Green) and switching between them. Canary Releases gradually introduce new changes to a small subset of users before a full rollout. Rolling Updates update services incrementally, reducing downtime.
Question: How do microservices communicate with each other?
Answer: Microservices typically communicate using HTTP/REST, gRPC, or message brokers like RabbitMQ or Kafka. HTTP/REST is simple and widely supported, but can be less efficient. gRPC offers high performance and efficient communication, especially for internal services. Message brokers enable asynchronous communication, which can improve system resilience and decouple services.