Design for flexibility with Interface Segregation Principle

𝗠𝗼𝘀𝘁 𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿𝘀 𝘂𝘀𝗲 𝗖#... But very few actually understand 𝘄𝗵𝗮𝘁 𝗵𝗮𝗽𝗽𝗲𝗻𝘀 𝗮𝗳𝘁𝗲𝗿 𝗵𝗶𝘁𝘁𝗶𝗻𝗴 𝗥𝗨𝗡. This visual breaks it down step by step: • How C# code is compiled into IL • How the .NET runtime (CLR) manages execution • How JIT converts it into machine code If you’ve ever been 𝗰𝗼𝗻𝗳𝘂𝘀𝗲𝗱 about: – how your code actually runs – what CLR really does – or why performance behaves the way it does This will make things much clearer. Understanding this isn’t just theory — it helps you write better, faster, and more reliable code. 𝗪𝗵𝗮𝘁 𝗽𝗮𝗿𝘁 𝗼𝗳 𝗖# 𝗼𝗿 .𝗡𝗘𝗧 𝗱𝗼 𝘆𝗼𝘂 𝗳𝗶𝗻𝗱 𝗵𝗮𝗿𝗱𝗲𝘀𝘁 𝘁𝗼 𝘂𝗻𝗱𝗲𝗿𝘀𝘁𝗮𝗻𝗱? #csharp #dotnet #programming #softwaredevelopment #backenddevelopment #developers #aspnetcore #fullstackdeveloper

Find the minimum distance between a given start index and any occurrence of a target in the array. Leetcode problem link: https://lnkd.in/gZFkirHw 🔍 Key Takeaways: Used a two-pointer approach to scan from both ends. Kept updating the minimum absolute distance from start. Included the condition left != right to avoid checking the same element twice. ✅ Why this works: Instead of scanning only from one side, this approach checks both ends in each iteration, making the logic structured and efficient. 📘 What I like about this solution: Simple and readable Avoids redundant checks Great example of combining two pointers with distance calculation #Java #LeetCode #DSA #Programming #SoftwareEngineering #Developers #loveToCode

Types of Dependency Injection in Spring - Setter vs Constructor Injection💡 Dependency Injection is a core concept in the Spring Framework that helps in building loosely coupled and maintainable applications. Among the different types, Setter Injection and Constructor Injection are the most commonly used.🚀📁 Setter Injection is performed using setter methods. In this approach, the container injects dependencies after the object is created. It provides flexibility because dependencies can be modified at runtime if needed. However, it may allow incomplete object creation if required dependencies are not set. On the other hand, Constructor Injection is performed through the constructor of a class. All required dependencies are provided at the time of object creation, ensuring that the object is fully initialized. This makes the application more robust and promotes immutability, as dependencies cannot be changed later. In simple terms: Setter Injection Flexible Can change values later Constructor Injection Mandatory dependencies More secure & reliable In real-world applications, Constructor Injection is generally preferred for mandatory dependencies, while Setter Injection is useful for optional configurations. Understanding these approaches helps in designing clean architecture and writing better Spring applications Thank you sir Anand Kumar Buddarapu #Java #Spring #DependencyInjection #BackendDevelopment #Programming #TechLearning #Software Development

🔁 Behavioral Design Patterns Behavioral Design Patterns focus on how objects communicate and interact with each other. They help make systems more flexible, maintainable, and loosely coupled. Common Behavioral Patterns: Strategy → choose behavior at runtime Observer → notify multiple objects on change Command → wrap request as an object State → change behavior based on state Template Method → define flow, allow custom steps Chain of Responsibility → pass request through multiple handlers Mediator → centralize communication between objects Why does it matter? Used in real applications for: workflow handling event-driven systems notifications request processing dynamic business rules 🎯 Interview One-Liner: Behavioral Design Patterns define how objects interact and share responsibilities in a flexible and maintainable way. #java #designpatterns #softwaredesign #backenddeveloper #springboot #programming

Abstraction is one of the core principles of OOP that focuses on hiding implementation details and showing only essential features of an object. In simple terms, abstraction allows you to focus on what an object does instead of how it does it. Why is Abstraction important? Reduces complexity in code Improves readability and maintainability Enhances security by hiding sensitive details Promotes reusability and flexibility How is it implemented in Java? Using abstract classes (partial abstraction) Using interfaces (full abstraction) Example: When you use a mobile phone, you simply make calls or send messages without knowing the internal circuitry. That’s abstraction in action! Mastering abstraction helps developers design scalable and efficient systems. #Java #OOP #Programming #SoftwareDevelopment #CodingConcepts

Day 45-What if your entire application depended on just one object… and creating more could break things? That’s exactly why Singleton Class exists. 🔹 What is a Singleton Class? A Singleton class ensures that 👉 only one object is created in the entire application. No matter how many times you access it, you always get the same instance. 🔹 How is it implemented? • Make the constructor private → restrict object creation • Create a static reference → hold the single instance • Provide a public static method → return that instance 🔹 Types of Singleton 1. Lazy Initialization 👉 Object is created only when required ✔ Saves memory ✔ Efficient for large applications 2. Eager Initialization 👉 Object is created when the class is loaded ✔ Simple and fast ✔ Always ready to use 🔹 Why does Singleton matter? • Prevents unnecessary object creation • Maintains consistency • Saves memory • Useful for shared resources like: DB connections, logging, configurations 🔹 Key takeaway 👉 Control object creation → Control your application behavior #Java #OOP #Singleton #DesignPatterns #JavaProgramming #Coding #SoftwareDevelopment #Developers #TechLearning #100DaysOfCode #Programming #CodeSmart #BackendDevelopment

Topic: Avoiding Long Methods Long methods are harder to understand, test, and maintain. When a method does too much: • Logic becomes complex • Debugging becomes difficult • Reusability decreases A better approach: • Keep methods small and focused • Follow single responsibility principle • Break logic into meaningful units Small methods improve: • Readability • Testability • Maintainability Because clean structure leads to better code quality. Simple code is easier to work with — for everyone. What’s your approach to keeping methods clean and simple? #CleanCode #SoftwareEngineering #Java #BackendDevelopment #Coding

The SOLID principles are five essential guidelines most powerful foundations for enhance software design. Let’s break it down 👇 🔹 S — Single Responsibility Principle (SRP) A class should have only one reason to change. Keep your code focused and modular. This principle states that "A class should have only one reason to change" which means every class should have a single responsibility and keep your code focused and modular or single purpose within the software system. 🔹 O — Open/Closed Principle (OCP) This principle states that software entities should be open for extension but closed for modification. which means you should be able to extend behavior without breaking existing code. 🔹 L — Liskov Substitution Principle (LSP) According to this principle, "derived or child classes must be able to replace their base or parent classes". This ensures that any subclass can be used in place of its parent class without 🔹 I — Interface Segregation Principle (ISP) Don’t force a class to implement interfaces it doesn’t use. Keep interfaces small and specific. 🔹 D — Dependency Inversion Principle (DIP) Depend on abstractions, Principle in object-oriented design that states that "High-level modules should not depend on low-level modules. Both should depend on abstractions". means "Big parts of your program should not directly depend on small, detailed parts. This improves flexibility and testability. #SOLIDPrinciples #CleanCode #SoftwareEngineering #Python #Django #BackendDevelopment #CodingBestPractices #SystemDesign #Developers #Programming

I recently encountered an ambiguous mapping error while working on a REST API. The stack trace was overwhelming, but the message was straightforward : I had two different methods competing for the same URL and HTTP verb. The issue happened because I had two methods, createEmployee and createNewEmployee, both annotated with @PostMapping, along with @RequestMapping on the controller class. Spring couldn't determine which method to use to handle the request. To resolve this, it's essential to keep the endpoints unique or utilize different HTTP methods to maintain organization. Happy coding! #Java #SpringBoot #Programming #SoftwareEngineering #Debugging

Hi Everyone, Exploring Reactive Programming for building highly scalable systems. Most traditional systems struggle with: Blocking calls , Thread exhaustion under load , Poor resource utilization Key ideas: 1) Non-blocking I/O 2) Event-driven architecture 3) Backpressure Wrote a quick blog sharing my learnings - https://lnkd.in/gwXnMwBW #Java #ReactiveProgramming #Scalability #SystemDesign