Best resource to revise Microservices in 2–3 hours before interviews?

I have around 5.5 years of experience as a Java backend developer and have a few interviews coming up soon.

I'm not looking for a complete Microservices —just a high-quality revision resource that I can finish in 2–3 hours max. Ideally, it should cover most commonly asked questions

-Microservices architecture

-Spring Security (basics)

-Kafka/RabbitMQ (or messaging concepts)

-Service Discovery, API Gateway, Config Server

Circuit Breaker, Resilience4j

What would you recommend for a quick but effective revision?

Thanks!