System Design
System design is the process of defining the architecture, components, modules, interfaces and data flow of a system to meet specific requirements. It focuses on creating scalable, efficient and maintainable solutions, covering both high-level design (HLD) and low-level design (LLD). Essential for building reliable, high-performance software systems.
Top System Design Blogs
I Interviewed for a Microsoft SDE I Role. Here's Everything That Happened.
My real Microsoft SDE I interview experience, all 4 rounds, the exact DSA problems with fully tested solutions, the WhatsApp system design round
10 System Design Questions Companies Actually Ask (Not Just "Design Twitter")
Master 10 real-world system design interview questions on caching, replication, rate limiting, load balancing, schedulers and distributed systems.
System Design Interview: How to Prevent Duplicate Payments Using Idempotency
How to prevent duplicate payments using idempotency keys, database constraints and reconciliation, a full system design interview walkthrough.
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
Functional vs Non-Functional Requirements (With Real Examples)
Functional vs non-functional requirements explained with a real incident, ISO/IEC 25010 types, examples, templates and a 5-minute audit checklist.
Availability in System Design: A Beginner-to-Advanced Guide
Learn availability in system design, including high availability, CAP, SLA, SLO, SLI, nines, redundancy, failover, observability, trade-offs and FAQs.
CAP Theorem in System Design: Consistency, Availability and Partition Tolerance Explained
Learn CAP Theorem with real-world examples, CP vs AP systems, quorum, PACELC, consensus algorithms, GitHub outage and interview questions for system design.
How to Create a gRPC Microservice in C# : A Complete Practical Guide
Learn how to build a production-ready gRPC microservice in C# with .NET 8, Protocol Buffers, client-server communication, streaming, and best practices.
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.
Load Balancer in System Design: Complete Beginner to Advanced Guide
Learn load balancers in system design with types, algorithms, Layer 4 vs Layer 7, health checks, SSL termination, scalability and real-world examples.
Top System Design Articles
System Design Interview – BIGGEST Mistakes to Avoid
Learn the biggest mistakes to avoid in a system design interview, from unclear requirements to poor trade-off analysis. Includes real-world cases, advanced insights and examples to help you ace your next system design interview.
Top High-Level Design(HLD) Interview Questions 2025
Top High-Level Design(HLD) Interview Questions and answers, HLD QnA, HLD interview preparation
Low-Level Design Interview Preparation Guide
LLD interview preparation Guideline
Master the Top Design Patterns for Interviews
Master the Top Design Patterns for Interviews With Real-World Examples | preparing for system design or LLD interviews, learning Design Patterns is essential.
Mastering the Template Design Pattern in C#
Mastering the Template Design Pattern in C#, Template Design Pattern in Depth: Structure, Use Cases and Best Practices
System Design Interview Questions
System Design Interview Questions | System Design Interview Questions for Freshers | Job Interview System Design Questions | Practice with common System Design Interview Questions | Top companies System Design Interview Questions | Frequently asked System Design Interview Questions
Popular Topics
MethodJavaMathTechnical InterviewCoding ProblemsSystem DesignC#Application DesignSQLLanguage-Concepts
A method is a block of code that performs a task.
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.
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.
Technical Interview is a structured assessment where employers evaluate a candidate’s technical skills, problem-solving ability and practical knowledge related to a specific role. It typically includes coding challenges, system design questions, debugging tasks and discussions about past projects. The goal of a technical interview is to measure how effectively a candidate can apply their technical expertise to solve real-world problems.
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.
System design is the process of defining the architecture, components, modules, interfaces and data flow of a system to meet specific requirements. It focuses on creating scalable, efficient and maintainable solutions, covering both high-level design (HLD) and low-level design (LLD). Essential for building reliable, high-performance software systems.
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.
Application design is the process of planning and structuring an application’s architecture, user interface, data flow and functionality to meet user and business requirements. It involves decisions on technology stack, design patterns, scalability and security. Good application design ensures performance, maintainability and a seamless user experience across platforms and devices.
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.
This tag is used to understand a basic part of the language.
Popular Articles
Amazon Transaction Logs (example question), Amazon Transaction Logs Interview question
Static Class vs Singleton in C#: A Complete Deep Dive
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
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
Top 50 SQL Interview Questions and Answers (Beginner to Intermediate). Top SQL Interview Questions for fresher. Frequently asked SQL interview questions with answers
Top High-Level Design(HLD) Interview Questions and answers, HLD QnA, HLD interview preparation
Maximum Product Subarray, Find Maximum Product Subarray in an Array, Given an integer array arr, find a subarray that has the largest product,
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.
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
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