Architectural Quantum: Understanding the Ideal Size of a Microservice

aruva - empowering ideas
7 min readMay 20

As we continue to adapt to an increasingly digital world, the importance of efficient software architecture has never been greater. Microservices architecture has emerged as a prominent pattern in modern software design. This blog post explores one crucial aspect of this design style — determining the ideal size of a microservice.

Photo by Growtika on Unsplash

The Significance of Microservice Size

The size of a microservice plays a crucial role in architectural design. It affects everything from scalability and maintainability to your development team's autonomy and deployment strategies. The larger a microservice, the greater its internal complexity. However, a smaller size might increase the number of services, leading to intricate service interactions and higher network latency. Thus, striking the right balance is vital.

impact of microservice size


In a microservices architecture, scalability is paramount, and the size of a microservice directly impacts this attribute. Smaller services can be more precisely scaled to meet demand, as each service can be independently scaled based on its specific load requirements. However, if the services need to be more granular, the increase in inter-service communication can cause higher network latency, impacting system performance.


A larger microservice is often more complex internally. This complexity could lead to code understanding, modification, and testing difficulties. On the other hand, smaller microservices, while potentially easier to understand and modify individually, may increase the system's overall complexity due to increased service interactions and dependencies.

Autonomy of Development Teams

The size of a microservice affects how autonomously teams can work. Larger services may require larger teams or cross-team coordination, leading to slower development cycles. Smaller services, encapsulating a single functionality, can be owned by small teams, increasing their autonomy and…

aruva - empowering ideas

We build world-class accelerators for businesses to take their idea from conceptualization to reality