Design Patterns that Deliver

Solve Real Problems

with 5 Design Patterns

This isn’t just another design patterns book.
Dive into real-world examples and practical solutions to real problems in real applications. With advanced topics and hands-on guidance, this ebook equips you to implement these patterns effectively and tackle complex challenges with confidence.

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Design Patterns Simplified ebook cover

Look what's Inside 👇

From Blueprint to Reality: Mastering the Builder Pattern
  • • Real World Problem
  • • Solution + Basic Builder Implementation
  • • Definition + UML Diagram
  • • Fluent Builder Pattern
  • • Director Class
  • • Nested Builder objects (Hierarchical)
  • • Builder Pattern + FluentValidation
  • • Step Builder Pattern
  • • Pros & Cons
  • • When to & When NOT to use it?
Scalable Solutions: Customizing with the Decorator Pattern
  • • Real World Problem
  • • Solution + Basic Decorator Implementation
  • • Definition + UML Diagram
  • • Composing Decorators
  • • Adding Scutor to Decorator Pattern
  • • Real Problem - Resilient API Service (Retry Policy)
  • • Pros & Cons
  • • When to & When NOT to use it?
Effortless Adaptability: Mastering the Strategy Pattern
  • • Real World Problem
  • • Solution + Basic Strategy Implementation
  • • Definition + UML Diagram
  • • Dependency Injection with Strategy Pattern
  • • Combining Strategy Pattern with Factory Pattern
  • • Using Configuration Settings for Strategy Selection
  • • Pros & Cons
  • • When to & When NOT to use it?
Plug and Play: Simplifying Integration with the Adapter Pattern
  • • Real World Problem
  • • Solution + Basic Adapter Implementation
  • • Definition + UML Diagram
  • • Object Adapter Pattern
  • • Class Adapter Pattern
  • • Example: Cloud Providers Integration
  • • Pros & Cons
  • • When to & When NOT to use it?
The Orchestrator’s Secret: Master the Mediator Pattern
  • • Real World Problem
  • • Solution + Basic Mediator Implementation
  • • Definition + UML Diagram
  • • Cross-Cutting Concerns
  • • MediatR Library for Request/Response Handling in Clean Architecture
  • • Event Aggregation
  • • Pros & Cons
  • • When to & When NOT to use it?

Why this Ebook

Practical and Actionable


Say goodbye to pages of fluff and endless theory. This book dives straight into the core of what matters - practical, real-world design patterns you can use right away.

Real-World Implementation


Each design pattern is explained with real-world examples, so you’ll know not just what to do, but why and how it applies to real projects.

Advanced Yet Accessible


The book balances advanced concepts with easy-to-follow explanations, making it perfect for intermediate and experienced developers looking to level up.

All-in-One Learning Package


From real-world scenarios to a complete GitHub repository with C# examples, plus bonus code in 4 other languages, this book gives you everything you need in one place.

Interview-Ready Knowledge


With a mini-ebook featuring 100 interview questions and answers, you’ll not only master design patterns but also gain a competitive edge in job interviews.

Affordable and Value-Packed


For that price, you’ll get a treasure trove of knowledge and resources—making this book an investment in your future as a developer.

What You'll Get

5 Practical Design Patterns

Carefully selected from years of real-world experience, these are the 5 most impactful and commonly used design patterns in software development. Each pattern is explained in detail and paired with actionable examples:

1. Builder

2. Decorator

3. Strategy

4. Adapter

5. Mediator

Design Patterns Simplified ebook devices
Design Patterns Simplified ebook - Real world example

Real-World Examples

• Learn each design pattern through real-world scenarios to see exactly how they solve real challenges.
• Master how to apply patterns effectively to create clean, scalable, and maintainable code.
• Strengthen your ability to tackle complex coding problems confidently.

Advanced Insights

Dive deeper into advanced concepts for each pattern, offering insights that go beyond the basics to elevate your coding skills.
Design Patterns Simplified ebook devices

Free GitHub Repository

The complete code from the book, with extras, is in the Solution of 20 mini-projects. You get full access to the GitHub repository.
Design Patterns Simplified ebook - Github repo

BONUS: Mini Ebook – Interview Prep

Sharpen your skills with a mini ebook featuring 100 design pattern interview questions and answers to give you an edge in job interviews.

BONUS: Multilingual Code Samples (Soon!)

Explore code examples in 4 additional programming languages, making this book a versatile resource regardless of your tech stack.
Design Patterns Simplified ebook - Github repo

Who am I?

Design Patterns Simplified ebook - Profile image of the author, Stefan Djokic

Hi friend, I'm Stefan

I am a Senior Software Engineer and Microsoft MVP with years of industry experience. I help a large number of developers to become better in their daily work through the content I share on social networks, blog and newsletter.

"Keep it simple and focus on what matters. Don't let yourself be overwhelmed." - Confucius

My goal is to convey knowledge to people in such a way - simple.

Stefan Djokic - Microsoft MVP

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