🔗 Microservices Interview Questions
Master distributed systems with questions on architecture patterns, resilience, and service communication
Distributed systems, patterns, circuit breakers, and service communication
🔗 Microservices Architecture
Master microservices patterns, circuit breakers, service discovery, and distributed systems concepts
Microservices architecture structures an application as a collection of loosely coupled, independently deployable services, each running its own process and communicating via lightweight protocols.
Latency in microservices is caused by network calls, serialization, and service chain depth. Multiple strategies can reduce latency.
Circuit Breaker prevents cascading failures in distributed systems by failing fast when a downstream service is unavailable, allowing the system to recover gracefully.
When a microservice is down, you need strategies for graceful degradation, failover, and recovery to maintain system stability.
MongoDB handles concurrency through document-level locking, optimistic concurrency control with versioning, and atomic operations.
Spring Boot Actuator with Micrometer provides metrics that can be exported to monitoring systems like Prometheus and visualized in Grafana with alerting.
OAuth 2.0 is an authorization framework that enables secure, limited access to user accounts. Spring Security provides comprehensive OAuth 2.0 support for both clients and resource servers.
Microservices Interview Tips
- ✓ Understand when to use microservices vs monolithic architecture
- ✓ Know the 12-factor app principles
- ✓ Be familiar with circuit breaker and bulkhead patterns
- ✓ Understand service discovery and load balancing
- ✓ Know how to handle distributed transactions (Saga pattern)
- ✓ Be prepared to discuss API versioning strategies
- ✓ Understand event-driven architecture and message queues
- ✓ Know about containerization (Docker) and orchestration (Kubernetes)