System-Design

Introduction Distributed systems underpin many critical applications today, from blockchain networks to large-scale cloud services. However, coordinating agreement (consensus) among distributed nodes is challenging, especially when some nodes may behave maliciously or unpredictably. This challenge is famously captured by the Byzantine Generals Problem, which models how independent actors can safely agree on a strategy despite some actors potentially acting against the group’s interest. This blog post will take you from zero to hero on Byzantine consensus in distributed systems. We’ll explore the problem’s origins, why it matters, fundamental solutions like Byzantine Fault Tolerance (BFT), and real-world applications. ...

Introduction Hash maps are fundamental data structures widely used in programming and system design for their efficient key-value storage and retrieval capabilities. In Python, the built-in dictionary (dict) serves as a highly optimized hash map. However, a linked hash map is a specialized variant that maintains the order of insertion while retaining the fast lookup of a hash map. This blog post explores the concept of linked hash maps in Python, their relevance to system design, and useful resources for deeper understanding. ...

Table of Contents Introduction What is Linktree and Why Does It Matter Understanding the Core Concepts Database Schema Design System Architecture Scaling Considerations Building Your Own Linktree Learning Resources Conclusion Introduction In the modern digital landscape, content creators, influencers, and businesses need efficient ways to manage and share multiple links across different platforms. Linktree has emerged as a popular solution that simplifies link management through a centralized “link in bio” system. But have you ever wondered about the technical architecture that powers such applications? ...

Event-Driven Architecture (EDA) is transforming how modern software systems are designed, enabling them to be scalable, resilient, and responsive. For developers and architects eager to master EDA, this comprehensive tutorial takes you from the basics all the way to advanced concepts with practical examples, resources, and links to deepen your understanding. Table of Contents Introduction to Event-Driven Architecture Core Components and Principles Benefits and Use Cases Implementing EDA: Beginner to Advanced Best Practices and Advanced Patterns EDA on AWS: Practical Example Recommended Learning Resources Conclusion Introduction to Event-Driven Architecture Event-Driven Architecture is a software design paradigm where system components communicate by producing and reacting to events, which represent state changes or actions such as user interactions, sensor outputs, or inter-service messages. Unlike traditional request-response models, EDA emphasizes asynchronous, loosely coupled communication that enables systems to react to events in real time, leading to highly scalable and fault-tolerant applications[3][5]. ...

Table of Contents Introduction to Redis Getting Started with Redis Redis Data Structures Deep Dive Advanced Redis Features Persistence and High Availability Performance Optimization Redis in System Design Resources Conclusion Introduction to Redis Redis (Remote Dictionary Server) is an open-source, in-memory data structure store that has revolutionized how we think about data caching and real-time applications. Originally created by Salvatore Sanfilippo in 2009, Redis has evolved from a simple key-value store to a comprehensive data platform supporting multiple data structures, pub/sub messaging, streaming, and more. ...