Cognitive Load: The Silent Killer in Software Development
This article explores the importance of cognitive load in software development. Cognitive load refers to the amount of mental effort a developer needs to complete a task; high cognitive load leads to confusion, wasted time, and money. The article analyzes intrinsic and extraneous cognitive load, illustrating how to reduce extraneous load through code examples, such as using meaningful intermediate variables, avoiding nested if statements, and prioritizing composition over inheritance. It also stresses avoiding excessive microservices, choosing appropriate language features, and adhering to the Single Responsibility Principle, noting that excessive abstraction and layered architectures can increase cognitive load. Finally, the article advises developers to focus on code readability and collaborate with junior developers to identify and improve cognitive load issues.
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