What are the architectural trade-offs between Monolithic and Microservice Architectures?
❓ Interview Prompt: Compare Monolithic Architecture vs Microservices Architecture, team autonomy, deployment complexity, distributed debugging, and network latency.
Evaluating application architecture paradigms:
| Attribute | Monolithic Architecture | Microservice Architecture |
|---|---|---|
| Deployment | Single deployment artifact (Easy initially) | Dozens of independently deployed services |
| Team Autonomy | Teams can bottleneck on shared codebase | Autonomous domain teams deploy independently |
| Complexity | Simple in-memory function calls; easy debugging | High complexity: network latency, distributed tracing |
| Scaling | Must scale entire monolith together | Scale specific bottleneck services independently |
Code Implementation Example
Monolith vs Microservices Architecture:
[Monolith] [Microservices]
┌────────────────────────┐ ┌─────────────┐ ┌─────────────┐
│ Auth | Orders | Billing│ │ Auth Service│ │Order Service│
└────────────────────────┘ └─────────────┘ └─────────────┘
│ │
▼ ▼
[Auth DB] [Orders DB]Start with a well-structured modular monolith, decoupling into microservices only when organizational or scale bottlenecks emerge.