Recently, microservices architectures have been gaining popularity, but the simplicity and performance of monolithic structures are still being defended. As the project scale grows, managing distributed systems becomes more challenging, while also increasing the speed of developing independent services. However, issues such as inter-service communication, data consistency, and DevOps costs also come into play. Do you think transitioning to microservices in a medium-sized web application is risky, or is it wiser to start with a monolithic architecture? Which factors do you prioritize in your evaluation? What are your experiences and preferences on this matter? What learning paths do you recommend for beginners in this field?
Should microservices be preferred over monolithic architecture in modern web development processes?
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Before deciding whether to transition from a monolith to microservices, I’d first compare it with a middle-ground approach like a "modular monolith." A modular monolith (e.g., a multi-module Spring Boot project or frontend subprojects) keeps the convenience of unified deployment while clearly separating business logic at the code level—almost achieving the decoupling of microservices—without the overhead of extra network calls, service registries, or distributed transactions. For medium-sized web apps, this often balances high performance with lower operational costs.
Microservices really shine when business growth demands frequent independent deployments or when teams are already split into smaller groups by business domains. Key factors to weigh include:
1. **Business decomposability** – Are there clear bounded contexts?
2. **Team structure** – Do you have independent dev/test/deploy teams?
3. **Ops maturity** – Can you handle container orchestration, monitoring, and canary releases?
4. **Data consistency needs** – Can you tolerate eventual consistency or solve it via event-driven patterns?
For newcomers, I’d recommend starting with layered/modular designs in a monolith, getting comfortable with lightweight service governance frameworks like Spring Cloud or NestJS’s microservices module, and then gradually extracting critical services. This way, you build experience while avoiding the "jump straight into the deep end" pitfall.
Start with a monolithic prototype to establish deployment and testing workflows, then microservice only the parts where bottlenecks appear—this reduces risk. For learning, it's practical to try small-scale implementations using official Docker and Kubernetes tutorials plus books like *Microservices Patterns*.