Monolith vs Microservices: When to Switch?

The Monolithic Approach

Startups often start with a monolith because it's easier to develop, simpler to deploy, and easier to debug. All code lives in a single repository.

The Shift to Microservices

As teams grow and traffic spikes, monoliths can become bottlenecks. Microservices decouple components, allowing independent scaling and deployment.

Key Challenges

• Data Consistency (CAP Theorem)
• Inter-service Communication (gRPC vs REST vs Events)
• Operational Complexity (Observability)