Blog

·May 25, 2025

Why Client Components Cannot be Async in Next.js: Understanding SC vs CC

Fix the 'async/await is not yet supported in Client Components' error in Next.js once and for all. This comprehensive guide explores the architectural differences between Server Components and Client Components, explains why React Hooks conflict with async rendering, and provides three robust strategies for data fetching: passing data from Server Components, using useEffect, and leveraging libraries like TanStack Query.

#Next.js#React#Frontend#Troubleshooting

Why Client Components Cannot be Async in Next.js: Understanding SC vs CC

·May 25, 2025

Clean Architecture: The Dependency Rule and Separation of Concerns

A deep dive into Robert C. Martin's Clean Architecture. Learn how to decouple your business logic from frameworks, databases, and UI using Entities, Use Cases, and the Dependency Rule. Includes Screaming Architecture and Testing strategies.

#Software Architecture#Clean Code#Design Patterns#Backend

Clean Architecture: The Dependency Rule and Separation of Concerns

Computer Science·May 25, 2025

Public vs Private Key

Distribute the Lock (Public), keep the Key (Private).

#CS#Security#Crypto

Computer Science·May 24, 2025

Symmetric Encryption: One Key to Rule Them All

Fast and efficient. But how do you share the key safely? The classic Key Distribution Problem.

#CS#Security#Encryption#Cryptography

Symmetric Encryption: One Key to Rule Them All

·May 24, 2025

Circuit Breaker Pattern: Preventing Cascading Failures and Thundering Herds

Stop cascading failures in distributed systems. Understand the 3 states of a Circuit Breaker, the dangers of infinite retries, and how to implement Bulkheads, Rate Limiters, and Graceful Degradation using Resilience4j and Istio.

#System Design#Microservices#Resilience#Backend

Circuit Breaker Pattern: Preventing Cascading Failures and Thundering Herds

·May 23, 2025

Does Parent Render always trigger Child Render? A Deep Dive into React Optimization

Master React performance optimization. Learn why child components re-render by default, and how to stop it using React.memo, Referential Equality, keys, Component Composition, and Context API separation. Includes detailed Profiling guide.

#React#Performance#Frontend#JavaScript

Does Parent Render always trigger Child Render? A Deep Dive into React Optimization

Computer Science·May 23, 2025

HTTP/2 & HTTP/3: The Speed Revolution

Text to Binary (HTTP/2), TCP to UDP (HTTP/3). From single-file queueing to parallel processing. Google's QUIC protocol story.

#CS#Web#HTTP#Protocol

Computer Science·May 22, 2025

Keep-Alive: Don't hang up yet

Establishing TCP connection is expensive. Reuse it for multiple requests.

#CS#Web#HTTP#Optimization

·May 22, 2025

Chaos Engineering: Building Immunity by Breaking Things

Why would Netflix intentionally shut down its own production servers? Explore the philosophy of Chaos Engineering, the Simian Army, and detailed strategies like GameDays and Automating Chaos to build resilient distributed systems.

#DevOps#SRE#Infrastructure#Resilience

Chaos Engineering: Building Immunity by Breaking Things

·May 21, 2025

Canary Deployment: The Safest Way to Release Software

Why is it called 'Canary'? How does it differ from Rolling and Blue/Green deployments? We explore the strategy of releasing to a small subset (1%) of users first to detect issues before they impact everyone. Includes details on Metrics, Tools, and advanced strategies.

#DevOps#Deployment#Infrastructure#CI/CD

Canary Deployment: The Safest Way to Release Software

Computer Science·May 20, 2025

CORS: The Arch-Enemy of Frontend Devs

Panic over Red Error message? Browser isn't bullying you; it's protecting you.

#CS#Network#Web#CORS

·May 20, 2025

Closure: The Secret Weapon of JavaScript (Deep Dive)

Understanding Lexical Scoping. How React Hooks (useState) rely on Closures. Memory management and common pitfalls.

#JavaScript#CS#Web#FunctionalProgramming

Closure: The Secret Weapon of JavaScript (Deep Dive)

·May 20, 2025

Stop Protecting Admin Pages with useEffect (Zero-Flash Security with Middleware)

I share how I almost got hacked by protecting admin pages with `useEffect`. Learn why client-side protection is dangerous and how to use Next.js Middleware to securely protect routes at the server level, including a deep dive into Edge Runtime limitations.

#Next.js#Middleware#Security#Authentication

Stop Protecting Admin Pages with useEffect (Zero-Flash Security with Middleware)

·May 20, 2025

Caching Strategies: Pattern Guide for High Performance

Where should you place your cache? A deep dive into Cache-Aside, Read-Through, Write-Back, and Write-Around patterns. Includes advanced topics like Cache Penetration, Breakdown, Avalanche, and a comparison of Distributed vs Local Caching.

#System Design#Backend#Performance#Redis

Caching Strategies: Pattern Guide for High Performance

Computer Science·May 19, 2025

CDN: How Netflix Streams Globally (Definitive Guide)

Why physical distance kills speed. Consistent Hashing, Edge Computing, Cache Purge strategies, and how CDNs defend against DDoS attacks.

#CS#Web#CDN#Infrastructure

CDN: How Netflix Streams Globally (Definitive Guide)

·May 19, 2025

Why SPA Refresh Returns 404: Understanding Client-Side Routing

Deployed your React app and getting 404 on refresh? Here's why Client-Side Routing breaks on static servers and how to fix it using Nginx, AWS S3, Apache, and Netlify redirects. Includes a debugging guide.

#Web#React#Deployment#Nginx

Why SPA Refresh Returns 404: Understanding Client-Side Routing

·May 19, 2025

My Images Disappeared and Console Turned Red (Next.js Image Security)

My images were fine until I used Next.js's `<Image>` component, which immediately threw errors. I realized this wasn't just a config issue, but a security measure to protect server resources. I explain how to configure `remotePatterns` and dive deep into how Next.js Image Optimization works under the hood.

#Next.js#Image Optimization#Security#Debugging

My Images Disappeared and Console Turned Red (Next.js Image Security)

·May 18, 2025

Why is My API Key undefined? (The Danger of Leaking Secrets in Next.js)

My API key worked fine locally but showed `undefined` in the browser console. I share my 3-hour debugging struggle caused by misunderstanding Next.js's 'Server-Client Boundary' and how I almost leaked my secret keys.

#Next.js#Environment Variables#Security#Debugging

Why is My API Key undefined? (The Danger of Leaking Secrets in Next.js)

Computer Science·May 18, 2025

WebSocket: Escape from Refresh Hell

HTTP is Walkie-Talkie (Over). WebSocket is Phone (Hello). The secret tech behind Chat and Stock Charts.

#CS#Web#WebSocket#Network

Computer Science·May 18, 2025

Binary Search Tree (BST): The Basics of Data Search and Balancing Aesthetics

Learn BST via Up & Down game. Why DBs use B-Trees over Hash Tables. Deep dive into AVL, Red-Black Trees, Splay Trees, and Treaps.

#CS#DataStructure#BST#Tree