Spring Boot Microservices

The course suits Java developers who have built Spring Boot REST services and now need the patterns that appear once several services talk to each other. It also suits engineering students preparing for backend and platform roles in India, where microservices questions come up in product-company and service-company interviews alike. If Spring Boot itself is still new, the Spring Boot Fundamentals course is the better starting point.

Lessons unlock in order, so later topics rely on the decomposition and API design that come before them. You read a short card, follow the narration and diagrams, then answer multiple-choice questions on that topic. Each answer is explained, including the options you did not pick. The curriculum covers service decomposition, REST contracts, Kafka messaging, service discovery, the API gateway, centralised configuration, resilience, distributed data, sagas, OAuth2 and JWT, observability, and containers with Kubernetes. The course is guided and self-paced.

Udemy and Coursera are built largely around recorded lectures and project builds, which suits learners who want to watch a multi-service system come together. This course is built around active recall: short reading cards and multiple-choice questions that ask you to pick the right choice between, for example, orchestrated and choreographed sagas, or a retry and a circuit breaker. Both formats have a place. Many engineers watch a build and then test whether they can justify each design decision without the code in front of them.

Areas where microservices mistakes usually show up:

• Two-phase commit limits and saga compensation steps
• Retry safety and idempotent operations across services
• Consumer lag and delivery guarantees in Kafka
• JWT pitfalls and resource server setup
• Distributed monolith risks that come from splitting services too early

Pick one small business flow, such as placing an order across three services, and sketch it before each lesson. Answer the MCQs for a topic before reading its explanation, then revisit any question you got wrong. Retrieval works well for this material because the trade-offs are easy to recognise on a slide but harder to explain in an interview. Keep a short notes file of the trade-offs you agree with and the ones you would question, since interview follow-ups tend to probe exactly those. When the design topics feel solid, the Java Interview Mastery course covers the language-level rounds.