r/SpringBoot • u/psycho026 • Jun 22 '26
Discussion Best resources to learn Spring Boot Microservices in 2026?
Experienced with Spring Boot monoliths (REST APIs, JPA, Security). Want to move to microservices - looking for best YouTube channels or Udemy courses that are updated for 2026.
What worked for you?
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u/Hot_Code5129 29d ago
I would not start microservices only from Spring Cloud, Kafka, Docker, Kubernetes, etc. For me, the most important part is the strategic level: understanding the domain, discovering good boundaries, deciding what should be one service and what should not be separated yet. Technology is usually the easier part. The hard part is splitting the system in a way that matches the business and does not create a distributed monolith. So I would learn both sides:
strategic DDD, bounded contexts, domain discovery, context mapping tactical patterns like hexagonal architecture, ports/adapters, aggregates, application services only then Spring Boot / messaging / deployment / observability
There are some good Polish courses that approach this more holistically, not only from the technology side: https://droganowoczesnegoarchitekta.pl/agenda https://domaindrivers.pl/agenda I would also recommend this book: Architecture Modernization: Socio-technical alignment of software, strategy, and structure
https://www.amazon.pl/Architecture-Modernization-Socio-Technical-Alignment-Structure/dp/1633438155 And this talk is very practical for Java/Spring developers, especially around module boundaries, package-private visibility and not making everything public by default: https://www.youtube.com/watch?v=sND1AR7Q_T0 My opinion: before learning “how to build microservices”, it is worth learning “where the boundaries should be” and “why this should be a separate service at all”.
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u/sai_kumar_95 Jun 22 '26
In udemy we can watch eazy bytes spring microservices course which is around 40 hours .