Low-Level Design (LLD)
Low-Level Design (LLD) defines the internal workings of individual software components. It focuses on class structures, object interactions, methods and data flow. LLD translates high-level architecture into detailed designs using principles like SOLID and design patterns, serving as a blueprint for developers to write clean, maintainable and scalable code.
Top Low-Level Design (LLD) Articles
Mastering the Prototype Design Pattern in Java (Beginner to Advanced)
Master Prototype Design Pattern in Java: learn cloning, deep vs shallow copy, implementations and real-world use cases to build high-performance scalable systems
Mastering the Singleton Design Pattern in C#
Mastering the Singleton Design Pattern in C#, Singleton Design Pattern in Depth: Structure, Use Cases and Best Practices, in depth design pattern, LLD , low level design
Low-Level Design Interview Preparation Guide
LLD interview preparation Guideline
Top Low-Level Design (LLD) Blogs
System Design Basics: High Level Design (HLD) vs Low Level Design (LLD)
System design explained in plain words, what HLD and LLD actually mean, with a real project story, a URL shortener example and working Java code
My Microsoft SWE Interview Experience (July 2026): 4 Rounds, Real Mistakes and the Offer
Read my Microsoft Software Engineer (L62) interview experience with coding, LLD, HLD, managerial rounds, mistakes, solutions, and preparation tips.
My Adobe Interview Experience for Android MTS-2 (SDE-III Level) ~ Full Breakdown
Adobe MTS-2 Android interview experience covering Android basics, coroutines, DSA, system design, hiring manager round, coding questions and tips.
Uber SDE-2 Interview Experience : LLD, HLD, DSA & Hiring Manager Round
Read a real Uber SDE-2 interview experience covering DSA, low-level design, high-level system design, behavioral rounds, hiring freeze and key takeaways.
Latency vs Throughput in System Design
Compare latency vs throughput in system design. Learn key differences, trade-offs, Little's Law, real-world examples and optimization techniques.
Throughput in System Design : The Complete Beginner to Advanced Guide
Understand throughput in system design with real-world examples, Little's Law, optimization strategies, scalability techniques and interview tips.
Swiggy Software Development Engineer I Interview Experience | DSA & Low-Level Design
Swiggy SDE 1 interview experience covering DSA, Golang, Low-Level Design, coding questions, LLD round, interview process and preparation tips.
Horizontal Scaling (Scale Out) in System Design: Complete Guide
Learn Horizontal Scaling (Scale Out) in system design with architecture, benefits, challenges, load balancing, real-world examples and best practices.
Vertical Scaling (Scale Up) in System Design : Everything You Need to Know
Learn Vertical Scaling (Scale Up) in system design, its advantages, limitations, use cases, examples, and how it compares with horizontal scaling.
Scalability in System Design: The Complete Beginner to Advanced Guide
Learn scalability in system design from beginner to advanced. Explore vertical & horizontal scaling, microservices, autoscaling, serverless and more.
Popular Topics
Coding ProblemsDistributed SystemInterviewSystem Design InterviewSQLC#AIMathDSAJava
Coding problems are exercises designed to test a programmer’s ability to write logic, solve challenges and apply algorithms or data structures. They help improve problem-solving skills, logical thinking and coding efficiency. Common in interviews and competitive programming, coding problems range from simple tasks to complex algorithmic challenges, preparing developers for real-world software development scenarios.
A distributed system is a network of independent computers that work together to achieve a common goal. These systems share resources, process tasks in parallel and ensure fault tolerance. Used in cloud computing, databases and large-scale applications. They improve scalability, reliability and performance by distributing workloads across multiple nodes efficiently.
A structured conversation where one participant asks questions and the other provides answers of those questions.
System Design Interview is a technical interview round where candidates design scalable, reliable and efficient software systems. It evaluates understanding of architecture, databases, APIs, scalability, load balancing, caching and real-world problem-solving to assess the ability to build large-scale applications.
SQL stands for Structured query language. It is a programming language for storing and processing information in a relational database. It is standard language for accessing and manipulating databases.
C# (C-Sharp) is a modern, object-oriented programming language developed by Microsoft for building secure, scalable applications. It runs on the .NET platform and supports features like strong typing, garbage collection, LINQ, async programming and cross-platform development. C# is widely used for web, desktop, game development (Unity), cloud services and enterprise-level software solutions.
Artificial Intelligence (AI) is the simulation of human intelligence in machines, enabling them to think, learn and make decisions. It powers systems to solve problems, recognize patterns, understand language and adapt over time. AI is used in various fields, including robotics, healthcare, finance and everyday applications like virtual assistants.
math tag that is used for mathematical operations Math is the study of numbers, shapes, patterns and logical relationships. It provides tools for problem-solving, measurement and analysis across science, technology, engineering and daily life. Math includes fields like algebra, geometry, calculus and statistics. It builds critical thinking skills and forms the foundation for computing, algorithms, data science and modern technological advancements.
DSA (Data Structures and Algorithms) is a fundamental concept in computer science that focuses on efficiently storing, organizing and processing data. Data structures like arrays, linked lists, stacks and trees manage data, while algorithms provide step-by-step solutions to problems. Mastering DSA is essential for writing optimized, scalable and high-performance code.
Java is a high-level object-oriented programming language. it's firstly released by Sun Microsystems in 1995. Use this tag when you're having queries using or understanding the language. This tag is also applicable to Java libraries and frameworks.
Popular Articles
Rotate an array of n elements to the right by k steps | right rotate the elements of an array | array rotate | rotate array by k step
install mysql by docker. docker mysql server installation. MySQL is one of the most popular open-source relational database management systems. Docker container is a great way to manage and deploy databases in a portable and isolated environment. In this article, we will walk through the steps by step to install and run MySQL in Docker.
Top High-Level Design(HLD) Interview Questions and answers, HLD QnA, HLD interview preparation
You are given two integer arrays arr1 and arr2, sorted in accending order, and two integers m and n, representing the number of elements in arr1 and arr2 respectively. Merge arr1 and arr2 into a single array sorted in accending order.
Amazon Transaction Logs (example question), Amazon Transaction Logs Interview question
how to install docker on amazon ec2 instance. docker installation command on linux machine, docker commands, Commonly Used Docker Commands on EC2
List Handling in Java vs C# vs C++ A Deep Comparison, This comparison provides a full view java , c# and c++ List like data structures
namespace in c# | namspace concept in c# | c# namespace | c sharp namespace | what is namesapce and it's use cases | why should we use namespace
Find the Maximum Subarray Sum | Largest Sum Contiguous Subarray | Kadane’s Algorithm | Maximum Subarray | Given an integer array nums, find the
subarray with the largest sum and return its sum | The Efficient Way to Find Maximum Subarray Sum
Most Popular Tools
Explore our top online tools including a blank page for notes, a QR code generator, word counter and collaborative editor. These free, easy-to-use utilities help you write, analyze, share and organize content faster. Perfect for developers, creators and students to streamline everyday digital tasks efficiently.
Blank Page
Create a blank canvas for your ideas, notes or sketches. Use this tool for rough work and jotting down your thoughts
QR Code Generator
A QR Code Generator is a tool that instantly converts text, URLs or other data into a scannable QR code. Users can create custom QR codes for websites, contact info or messages. It's commonly used for quick access, sharing and printing without needing a backend or complex setup.
Word Counter
Perform various string operations like counting characters, words or letters.
Collaborative Editor
Collab Editor is a powerful, free-to-use online platform that lets you collaborate in real-time. Whether you re working on documents, brainstorming idea, or discussing projects etc