NHNasim Hossain Rabbiinblog.nasimhossain.dev·4d ago · 10 min readLittle's Law: The Formula Behind Every Good System Design InterviewYou're in a system design interview and you're asked to design a banking application. Customers can: Login View accounts Check transactions Transfer money Download statements The interviewer ad10
AJAyush Jaininayushjjainn.hashnode.dev·5d ago · 8 min readJavaScript Modules: Import and Export ExplainedLet me tell you about my one big notebook. I keep a single thick unruled spiral notebook for everything in my branch. Every electrical theory subject goes into it, AC Machine II, Power Electronics, Po00
AJAyush Jaininayushjjainn.hashnode.dev·5d ago · 7 min readString Polyfills and Common Interview Methods in JavaScriptEvery Indian grows up on jugaad. The mixer dies right before dinner, so you crush the masala with a belan. Your charger cable stops working unless you hold it at one exact angle, so you prop a book on00
AJAyush Jaininayushjjainn.hashnode.dev·5d ago · 8 min readArray Flatten in JavaScriptEvery time I pack for a trip, my suitcase is never just a big pile of loose stuff. It is organised into pouches. One pouch for chargers and cables, one for toiletries, a little pocket for documents, c00
TSTarun Sharmain101beardo.hashnode.dev·Sep 9 · 3 min readWhy does React call your component function twice in development?If you have added a console.log at the top of a component in a fresh Create React App or Next.js project, you have probably noticed it fires twice on the first render. Nothing is broken. This is Stric00
AHAndreas-Christian Hetzlinshift2it.hashnode.dev·Sep 8 · 9 min readYour First IT Support Interview: How to Answer When You Don't KnowA practical way to handle unfamiliar questions, explain your reasoning, and show where your responsibility ends. You have prepared your CV. You can talk about a small project. Then the interviewer ask00
AKAshutosh Krishnainblog.ashutoshkrris.in·Sep 5 · 11 min readRethinking Expense Validation: From Hardcoded If Statements to Pluggable Engines in JavaYou are sitting in a system design interview, or worse, staring at a pull request where a junior engineer has just added their fourteenth nested conditional statement to a reimbursement service. Softw01N
ASAbirami Sriinabi-blog.hashnode.dev·Sep 1 · 8 min readDay 2 of My 30-Day DSA Journey — Strings with JavaScriptWelcome to Day 2 of my 30 Days of DSA with JavaScript. On Day 1, I started with basic array problems. Today, I moved into String problems and learned several important problem-solving patterns. The ma00
DJD Jindevprepapp.hashnode.dev·Aug 27 · 2 min readBest AI Voice Interview Practice Tools in 2026Preparing for a technical interview in 2026 means more than grinding LeetCode. Companies increasingly want candidates who can think clearly out loud, defend decisions under pressure and communicate co00
SKSHARIQUE KALAMinshariquekalam.hashnode.dev·Aug 25 · 3 min readBuilding idempotent REST APIs in Salesforce?In REST APIs, the POST method is inherently non-idempotent. This means that if a client calls an Apex REST endpoint annotated with @HttpPost using the JSON payload below, a new Case record will be cre00
