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#lld

139 posts

System Design (LLD)

Today, I dived into Low-Level Design (LLD) and understood why it plays such a critical role in building scalable and maintainable software systems. Here’s my takeaway 👇 🔹 What is LLD?Low-Level Design is where actual code starts taking shape. It...

3d ago2 min read

AKAnkit Kumarwhy-every-developer-should-learn-git.hashnode.dev

Why Version Control Exists: The Pendrive Problem

Life Before Version Control Before Git, developers managed code using very basic methods such as: Pendrives Emails ZIP files These methods worked for small projects, but they created serious problems as teams and codebases grow. The Pendrive An...

Jan 302 min read

GPGautam Pateliamgautam.hashnode.dev

The Observer Design Pattern

In this article, I will explain the Observer Design Pattern simply and understandably. I will use a hospital patient monitor system as an example. Picture a hospital room. One patient. One heart monitor. But several different things care about that d...

Jan 74 min read

0T01 Tanishq Mohodtanishqcoding.hashnode.dev

Stop Using Inheritance Everywhere: Master the Strategy Design Pattern

Welcome Back 👋 In the last blog, we explored SOLID principles — the rules of good object-oriented design. But knowing principles alone is not enough. 👉 The real question is:How do we apply these principles while designing real systems? That’s where...

Jan 56 min read

AKAlisha Kausheenalishakausheen.hashnode.dev

Factory Method Pattern

Stop Using new Everywhere At some point, every codebase reaches this stage if (type.equals("CAR")) { return new Car(); } else if (type.equals("BIKE")) { return new Bike(); } else if (type.equals("TRUCK")) { return new Truck(); } It works...

Dec 19, 20253 min read

GPGautam Pateliamgautam.hashnode.dev

The Prototype Design Pattern

Have you ever heard of the Prototype Design Pattern? Today, I will explain this in an easy-to-understand manner. First, let’s take the following example: You are creating a team-based first-person shooter game where there will be one real player and ...

Dec 18, 20254 min read

AKAlisha Kausheenalishakausheen.hashnode.dev

SOLID Principles Explained

The Rules That Make Design Patterns Actually Work If Object-Oriented Design is the foundation,then SOLID principles are the load-bearing pillars. Design patterns assume your code follows SOLID.Without SOLID, patterns feel forced, confusing, and over-...

Dec 15, 20253 min read

AKAlisha Kausheenalishakausheen.hashnode.dev

What Are Design Patterns?

Think of software like a building: Code = bricks Classes = rooms Design patterns = blueprints A design pattern is a reusable blueprint for solving a design-level problem. What design patterns are: Proven solutions High-level structures Langua...

Dec 13, 20252 min read

MMaverickjyanshu.hashnode.dev

Singleton Design Pattern

The Singleton Design Pattern is one of the most widely known and frequently used creational design patterns in software engineering. It ensures that a class has only one instance throughout the application lifecycle and provides a global point of acc...

Dec 9, 202520 min read

BMBaijnath Mahtolldwithbaijnath.hashnode.dev

SOLID Principles

SOLID principles are: S – Single Responsibility Principle (SRP) O – Open/Closed Principle (OCP) L – Liskov Substitution Principle (LSP) I – Interface Segregation Principle (ISP) D – Dependency Inversion Principle (DIP) 1 : Single Responsibilit...

Dec 7, 202511 min read

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#lld

System Design (LLD)

Why Version Control Exists: The Pendrive Problem

The Observer Design Pattern

Stop Using Inheritance Everywhere: Master the Strategy Design Pattern

Factory Method Pattern

The Prototype Design Pattern

SOLID Principles Explained

What Are Design Patterns?

Singleton Design Pattern

SOLID Principles