Embracing Complexity: Reflections on Software Architecture
The article argues that complexity is an unavoidable aspect of software development and architecture, urging engineers to acknowledge, manage, and strategically place it rather than trying to eliminate it, while illustrating the trade‑offs in tooling, abstractions, and micro‑service design.
Complexity is an eternal theme in software development, repeatedly surfacing in debates about the right amount of comments, ideal abstractions, and when a framework becomes overly magical.
The author contends that attempting to solve problems by simply removing complexity is misguided because complexity must exist somewhere and cannot be eradicated.
Resilience Engineering introduces the control‑theoretic concept of "necessary diversity": only complexity can handle complexity.
When designing build tools, simplifying them too much prevents handling edge cases, while handling edge cases forces deviation from intended norms and requires shared rules between tools and users.
These trade‑offs lead to inevitable “shim” layers when users' use cases do not align with tool simplicity, causing complexity to migrate rather than disappear.
In software architecture, especially with micro‑services, attempts to make each service simple can still leave complexity elsewhere; if not in services, it resides in documentation, training, or the mental models of engineers.
Accepting complexity, giving it a proper place, and designing systems and organizations with that awareness can turn it into a powerful ally for architectural design.
Architect
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