juniorDesign Patterns
What are Software Design Patterns?
Updated Apr 28, 2026
Short answer
Design patterns are typical solutions to commonly occurring problems in software design.
Deep explanation
They are like pre-made blueprints that you can customize to solve a recurring design problem in your code. They are not specific pieces of code, but rather general concepts for solving a particular problem. The Gang of Four (GoF) categorized them into Creational, Structural, and Behavioral patterns.
Real-world example
Using a well-established blueprint to build a house rather than designing a new structural support system from scratch.
Common mistakes
- Treating patterns as out-of-the-box code snippets rather than concepts to be adapted.
Follow-up questions
- Who are the Gang of Four (GoF)?