Lakhveer Singh Rajput Blog's: 🌟 Insights on Tech, Coding, and Personal Growth 🚀💡

🏗️ Mastering System Design for Senior-Level Interviews: Crack It with Structure & Smarts! 🎯 System Design is the litmus test for senior developers and architects. It’s not just about writing code — it’s about solving real-world problems at scale . From building a Twitter clone to designing an e-commerce backend, you’re judged on how you think, scale, and solve . 💡 🎓 What Is System Design? System Design involves designing the architecture of complex systems. It tests: 🔍 Requirements analysis 🗃️ Database design 🏗️ Architecture decisions (monolith, microservices) 🔄 APIs and communication ⚖️ Load balancing, caching, scaling 🔐 Security and rate limiting 📈 Monitoring and logging 💥 Interview Format A typical System Design interview lasts 45–60 mins and is structured as: 🧪 Example Problem: Design a URL Shortener (like Bit.ly) 🔗 🔍 Step 1: Clarify the Requirements Ask: Should the URLs be customizable? Expiry time? Analytics needed? Scale: Read-heavy or Write-heavy? Assume...

🌍 Timeless Wisdom: Global Philosophies That Lead to a Better, Meaningful Life 🌱💡 In a world buzzing with noise, speed, and superficial distractions, many seek deeper meaning and direction. Across centuries and continents, human civilizations have shaped philosophies — frameworks to live by, rooted in values, wisdom, and reflection. 🧘‍♂️🌿 Let’s take a journey around the world through some of the most powerful life philosophies — and explore the principles that can transform your life . 1️⃣ Stoicism (Greece 🇬🇷) “You have power over your mind — not outside events. Realize this, and you will find strength.”  — Marcus Aurelius Core Principles: Control the controllable. Let go of what you can’t. Live according to nature. Be rational, simple, and moral. Practice negative visualization. Imagine loss to build resilience. Amor Fati. Love your fate, good or bad. 🧘 Example: Instead of complaining about a canceled flight, a Stoic would accept it as part of life and focus on ho...

  🔮 Git: The Magic Wand Every Developer Must Master! 🪄 “Give me Git and I can version the world.” Whether you’re a beginner developer or a senior engineer, Git is your ultimate spellbook! 🧙‍♂️✨ It helps you track changes, collaborate with others, and time-travel through your code with ease. But are you really using Git to its fullest potential? 🤔 In this blog, let’s uncover the best practices , magical tricks , and powerful Git commands that will level up your productivity. 💻⚡ 🚀 What is Git, Really? Git is a distributed version control system 🗂️ that helps developers collaborate, manage, and track changes in their source code over time. ✅ Keeps history of your code changes ✅ Enables team collaboration without conflict ✅ Lets you roll back broken code ✅ Works even offline ! 🌐❌ Let’s now unlock some magical tips and tricks! 🧩 🪄 Git Best Practices: Use Git Like a Pro 1. Commit Often, But Meaningfully 📝  Avoid dumping all your changes in one commit. Commit ...

  🧠 JavaScript Tricky Questions You Must Master for Your Next Interview! 🚀 JavaScript may look friendly, but under the hood, it’s full of quirks that even experienced developers get stumped by! 😅 Whether you’re prepping for your next big tech interview or want to level up your JS brain, here are some tricky and mind-bending questions with real-world examples. 💡 Let’s dive deep! 🏊‍♂️ 🔥 1. What is the result of [] + [] and why? Answer: "" (an empty string) console . log ([] + []); // "" Why? When using + with arrays, JavaScript tries to convert both operands to strings and then concatenate them. []. toString (); // "" So essentially it becomes: "" + "" => "" 🤯 Mind blown? It gets crazier! 🌀 2. What is the output of [1,2,3] + [4,5,6] ? Answer: "1,2,34,5,6" console . log ([ 1 , 2 , 3 ] + [ 4 , 5 , 6 ]); // "1,2,34,5,6" JavaScript converts both arrays to strings: [ 1 , 2 , 3 ]. toString (); // ...

  🌩️ Unlocking the Cloud: Best Cloud Storage Services for Software Applications, Data Analysis & Big Query! 🚀 In today’s fast-paced digital world, cloud storage is the backbone of everything — from running scalable apps to crunching petabytes of data for machine learning and business intelligence. 💡 Whether you’re building a modern SaaS app, analyzing massive datasets, or running BigQuery jobs, choosing the right cloud storage can boost your performance, scalability, and ROI. Let’s explore the top cloud storage solutions , their features , ideal use-cases , and configuration steps for each. 🧠 ☁️ 1. Amazon S3 (Simple Storage Service) 🔧 Features: Object-based storage 🧱 Unlimited storage capacity 📦 Versioning & lifecycle policies 🔁 Server-side encryption & IAM-based access 🔐 Supports S3 Select, Glacier (archival), and Transfer Acceleration 🚀 📈 Best For: Storing assets for web/mobile apps Data lakes for analytics & machine learning Backup and dis...

  🧠💀 Dark Psychological Secrets That People Use (But Won’t Tell You) 😈 | Learn, Master & Defend Yourself “The most dangerous people are always clever, quiet, and calculated.”  — Robert Greene, The 48 Laws of Power In this blog, we’ll uncover the dark psychological secrets that are used in everyday life — in the workplace, relationships, business, and even politics. These aren’t magic tricks. They’re powerful techniques rooted in psychology and human behavior. Learn them. Master them. Or at least recognize when someone else is using them on YOU. 🧠⚠️ 1️⃣ Gaslighting: Turning Reality Against You 🔥🧯 What it is:  Gaslighting is a manipulation technique where someone makes you question your memory, perception, or sanity. Example:  You confront your partner about their flirty messages with someone else. They respond,   “You’re being paranoid. That never happened. Are you okay lately?” Over time, you start doubting your own judgment  — classic gaslighti...

  🤖✨ Machine Learning Magic: Types, Process & How to Build an AI Program! Hey Tech Enthusiasts! 🚀  Ever wondered how Netflix predicts what you’ll love to watch, or how your phone understands your voice commands? 🤔   Machine Learning (ML) is the secret sauce behind these smart systems. Let’s decode it — from basics to building a simple AI program! 🎉 📚 What is Machine Learning? In simple words:  Machine Learning is the art of teaching computers to learn from data —  without explicit programming ! 🧠💻  It’s a branch of Artificial Intelligence (AI) that enables systems to improve automatically through experience. 🔍 Types of Machine Learning ML is broadly classified into 3 main types: 1️⃣ Supervised Learning 📌 Definition: Train with labeled data (inputs + expected outputs) 🏷️ Examples: Spam detection, image classification, predicting house prices. 2️⃣ Unsupervised Learning 📌 Definition: Train with unlabeled data — the model finds patterns ...

  📊✨ Attribution & Forecasting: Uncovering Insights & Predicting the Future Like a Pro! In the age of data-driven decisions, understanding where your results come from (Attribution) and predicting what’s next (Forecasting) are your ultimate power moves! 🚀 Whether you run a business, manage ads, or analyze trends — mastering these will help you win big. Let’s break it down: What, Why, How, and the Best Ways to Do It — with algorithms and examples! 🔍 What is Attribution? Attribution means figuring out which touchpoints, channels, or actions deserve credit for a desired outcome (like a sale or sign-up). 👉 Example:  Imagine you run an online store. A customer sees your Google ad, reads your blog, then clicks your Instagram post before buying. Which channel deserves the credit? Attribution answers this! 🎯 Why Do We Need Attribution? ✅ Better Budgeting: Know which channels work best and invest more wisely.  ✅ Boost ROI: Stop wasting money on low-impact ch...