Why You Should Rethink Using Microservices

Note: The original English title was "Microservices - Please Don't," which the author likens to a warning not to misuse microservices.

Microservices have become a buzzword, with many proclaiming they can rescue legacy architectures, reduce redundancy, and simplify maintenance. However, the author cautions that before jumping into this model, teams should critically assess whether it truly fits their project.

What Exactly Is a Microservice?

A microservice is not a monolithic whole; it should handle a narrowly scoped domain and do the least amount of work needed to fulfill its purpose. Services typically communicate over network protocols such as REST or RPC, which introduces remote interaction overhead.

Misconception #1: Microservices Make Code Simpler

While microservices can reduce the size of individual codebases, they often lead to discarded requirements and increased complexity in managing multiple services, potentially undermining overall system simplicity.

Misconception #2: Microservices Are Easier

Distributed transactions are inherently hard; splitting a domain into many services frequently creates cross‑service data dependencies, turning simple operations into complex saga‑style workflows.

Misconception #3: Microservices Run Faster

Breaking a system into services adds network latency and I/O overhead. Performance gains usually stem from using more efficient languages or runtimes, not from the microservice architecture itself.

Misconception #4: They Simplify Team Collaboration

Isolating teams around separate services can lead to “not my problem” attitudes, increased testing effort, and coordination challenges when bugs span multiple services.

Misconception #5: They Provide Better Resilience

Resilience can be achieved without microservices by partitioning a monolith into logical clusters and scaling them individually; microservices are not a magic solution for elasticity.

When Should You Use Microservices?

Adopt microservices only after you have a clear understanding of your domain boundaries, a reliable workflow, and robust monitoring in place. Without solid domain knowledge, microservices can cause more harm than benefit.

Conclusion

Before embracing microservices, consider the trade‑offs outlined above. The architecture is not inherently bad, but jumping in without careful analysis can lead to failure, much like a novice surfer tackling a wave without skill or preparation.