Architecture Patterns and Tradeoffs Questions

Covers decision making between monolithic and microservice architectures and the broader architecture pattern trade offs that drive those choices. Candidates should explain when a monolith is appropriate versus when to adopt or migrate to microservices, describing technical and organizational criteria such as team size and structure, release cadence, performance and scaling requirements, and business domain boundaries. Expect discussion of trade offs including operational complexity, service independence, deployment velocity, testing and debugging difficulty, data consistency and transactions, latency, cost of infrastructure and monitoring, and security and governance. Evaluate knowledge of Conway law and how team boundaries shape architecture decisions. Be able to articulate migration strategies and concrete approaches such as the strangler pattern, bounded context decomposition, incremental service extraction, API versioning, database migration techniques, deployment and testing strategies to minimize disruption, rollout and rollback plans, and metrics for measuring migration success.

MediumTechnical

99 practiced

Compare sidecar-based (service mesh) vs in-process library approaches for cross-cutting concerns such as telemetry, authentication, and retries. Evaluate trade-offs in terms of performance, operational complexity, deployment flexibility, and ownership.

HardSystem Design

103 practiced

Design an architecture for a user profile service that must provide low-latency reads (session affinity) while ensuring strong consistency for profile updates across regions. Discuss multi-region caching, leader election per partition, conflict resolution, and read-your-writes guarantees.

EasyTechnical

122 practiced

Explain Conway's Law and discuss its practical implications for architecture decisions. As a Solutions Architect, how would you shape team boundaries, communication patterns, and ownership to encourage a desired microservices topology instead of an accidental one?

EasyTechnical

89 practiced

Explain the difference between monolithic and microservice architectures. As a Solutions Architect advising a mid-stage startup, list scenarios where a monolith is more appropriate and when microservices are justified. Consider team size, release cadence, operational overhead, time-to-market, and short-term vs long-term maintainability.

EasyTechnical

97 practiced

Provide a minimal yet practical checklist of essential technical and organizational steps to extract a small service from a monolith (i.e., a minimal viable extraction). Cover API contracts, data access, deployment, monitoring and observability, testing, rollback, and team responsibilities.

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