Why Microservices Exist — and When Not to Use Them
Independent deployability is the point; complexity is the price. Lesson 1 of Level 9: Microservices.
Level 9 · Microservices · Lesson 1 of 13
Independent deployability is the point; complexity is the price.
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- Event Sourcing & CQRS — Previous lesson
- Finding Service Boundaries & Splitting the Monolith — Next lesson
- Level 9: Microservices — Back to the level
Try it hands-on
- Microservices Lab — Failures, retries, circuit breakers, sagas and idempotency.
All lessons in Microservices
- Why Microservices Exist — and When Not to Use Them
- Finding Service Boundaries & Splitting the Monolith
- Database per Service & Data Ownership
- Synchronous vs Asynchronous Communication
- API Gateways, BFFs & Service Discovery
- Timeouts, Retries & Retry Storms
- Circuit Breakers & Bulkheads
- Idempotency: Making Retries Safe
- Distributed Transactions: 2PC, Sagas & the Outbox
- Observability: Logs, Metrics, Traces & SLOs
- Deployment: Containers, Kubernetes, Canary & Feature Flags
- Testing Microservices & Consumer-Driven Contracts
- Teams, Ownership & Conway’s Law