Dependency Ignorance

Dependency Ignorance is a software design principle that advocates for minimizing or eliminating dependencies between different parts of a system, particularly by avoiding reliance on external libraries, frameworks, or services unless absolutely necessary. It emphasizes building self-contained, modular components that can function independently, reducing complexity and improving maintainability. This concept is often applied in contexts like microservices architecture, embedded systems, or when developing lightweight applications.

Also known as: Dependency-Free Design, Zero-Dependency Principle, Minimal Dependencies, Self-Contained Systems, Dependency Avoidance

Why learn Dependency Ignorance?

Developers should learn and apply Dependency Ignorance when building systems that require high reliability, portability, or minimal overhead, such as in resource-constrained environments like IoT devices or performance-critical applications. It helps avoid issues like version conflicts, security vulnerabilities from third-party code, and vendor lock-in, making the software more robust and easier to test in isolation. Use cases include developing standalone tools, creating reusable libraries with no external dependencies, or designing microservices that don't rely on shared infrastructure.

Learning Resources

• docs: The Art of Dependency Ignorance in Software Design
• tutorial: Zero-Dependency Programming: A Practical Guide
• book: Software Architecture Patterns: Dependency Management
• video: Minimizing Dependencies in Microservices