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Software Design Guides

Software Design Principles

Think of these guides as architectural blueprints for software. Just as good building design prevents collapsing structures, good software design prevents collapsing code as your application grows.

Why Design Principles Matter​

Good software design is the difference between code that can evolve gracefully over time and code that becomes increasingly difficult to maintain. These guides cover fundamental principles that help developers create better software by:

  • Reducing complexity through simple, focused designs
  • Improving maintainability by making code more readable and logical
  • Enhancing extensibility to accommodate future changes
  • Preventing technical debt that slows down development
  • Promoting consistency across projects and teams

Guides in This Section​

SOLID Principles

Learn the five core principles of object-oriented design: Single Responsibility, Open-Closed, Liskov Substitution, Interface Segregation, and Dependency Inversion.

DRY Principle

Explore the "Don't Repeat Yourself" principle and techniques to eliminate duplication in your codebase for better maintainability.

KISS Principle

Understand the "Keep It Simple, Stupid" principle and approaches to maintain simplicity in software design and implementation.

YAGNI Principle

Learn about the "You Aren't Gonna Need It" principle and how to avoid speculative features that increase complexity.

Design Patterns

Explore common design patterns that provide proven solutions to recurring problems in software design.

SQL Session Management

Learn best practices for database connection and session management in SQL-based applications.

Clean Code Principles

Discover principles for writing clean, readable, and maintainable code that is easy to understand and modify.

Test-Driven Development

Learn about the practice of writing tests before implementation to drive better design and ensure code quality.

Code Smells

Identify common indicators of potential problems in code that may need refactoring or redesign.

How to Use These Guides​

These guides can be used in several ways:

  • As a learning resource when first exploring software design
  • As a reference when making architectural decisions
  • As teaching material when mentoring other developers
  • As evaluation criteria when reviewing code

Whether you're a beginner learning these concepts for the first time or an experienced developer looking to refresh your knowledge, these guides provide valuable insights into creating better software.