Network Architecture and Communication Patterns Questions

Design and analysis of network architectures and service communication patterns for reliable, performant, and secure distributed systems. Topics include network topology and capacity planning, load balancing strategies, content delivery networks, caching and edge delivery, application programming interface gateway design, service to service communication patterns including synchronous and asynchronous messaging, message queues, publish subscribe, request routing, retries and backoff, timeouts, idempotency, circuit breakers, bulkheads, and service mesh considerations. Also covers latency optimization, failure modes and resilience, observability and monitoring, network security principles such as encryption and segmentation, and how architectural choices affect scalability and operational complexity.

HardSystem Design

31 practiced

You must decide between using an API gateway to centralize cross-cutting concerns (auth, rate limiting, routing) versus adopting a service mesh for inter-service features (mTLS, retries, tracing). Architect a recommendation for a large microservices platform: compare operational complexity, performance overhead, team boundaries, and which SRE responsibilities shift with each choice.

EasyTechnical

42 practiced

Explain the difference between readiness and liveness health checks in an orchestration environment (e.g., Kubernetes). Describe how incorrect probes can cause cascading evictions or traffic blackholes and how you would design probes for a database-backed web service.

HardSystem Design

35 practiced

Architect a global network topology to support 100k RPS with 99.99% availability across three regions. Include load distribution, capacity planning for network devices, redundancy, cross-region failover, health checks, and how you'd test and validate capacity and failover behavior.

HardTechnical

36 practiced

A service mesh sidecar adds an average 5ms latency per hop and your critical service spans three hops. Evaluate options to reduce latency overhead while preserving key features like mTLS and observability. Consider bypassing the mesh for hot paths, lightweight proxies, or native in-app libraries and discuss operational consequences.

EasyTechnical

31 practiced

Compare synchronous (e.g., HTTP/gRPC) and asynchronous (e.g., message queues, pub/sub) service-to-service communication. For each mode discuss latency implications, failure handling, observability needs, coupling, and typical SRE tradeoffs.

Unlock Full Question Bank

Get access to hundreds of Network Architecture and Communication Patterns interview questions and detailed answers.

Join thousands of developers preparing for their dream job.