Design principles

How to use principles like KISS, DRY, and SOLID to make design decisions, understanding what problems they address and when to apply them.

Six principles for handling complexity, duplication, and dependencies. What each one gives you, and when applying it can make the design worse.

Each principle is there to keep a small change from demanding a lot of work. Applying them to the letter can add more complexity than it resolves.

Practical questions for spotting unnecessary complexity, unclear responsibilities, and dependencies that make change harder.