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Practical guides on AI, DSA, full stack, cloud, and career growth.

Showing 363 articles

AI / 15 min read

I Accidentally Built a Banking Chatbot Anyone Could Hack

A step-by-step teardown from Demo to Production: Architecting a Real Agentic AI System

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AI / 14 min read

Stop Collecting AI Certifications. Build This Instead.

AI certifications can help you learn, but they won’t automatically make you an AI engineer. In 2026, the difference between knowing AI and actually being able to build with it matters more than ever.

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System Design / 20 min read

Design a Stock Trading App — System Design Interview Question

How would you design a Groww/Zerodha-like platform that handles live stock prices, thousands of orders per second, failures, and massive traffic?

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System Design / 16 min read

What Really Happens When 1 Million Users Hit Your Website at the Same Time?

A beginner-friendly journey from one server to load balancers, microservices, queues, caching, databases, and CDNs.

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Full Stack / 10 min read

If I Were a Fresher in 2026, I’d Build Projects Like THIS

I wouldn’t build another To-Do app. I’d build projects that give interviewers a reason to ask questions.

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Full Stack / 12 min read

Forward Deployed Engineer Interviews : The 6 Skills You Need to Prepare For

Forget preparing only for DSA and system design. Here’s what Forward Deployed Engineer interviews are actually testing — and how to…

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AI / 14 min read

PostgreSQL Internals Explained Pages, Tuples, Indexes, and MVCC

What actually happens when PostgreSQL stores, updates, and finds a row — and why the same row can exist in multiple versions.

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Full Stack / 11 min read

Express.js vs Fastify in 2026: Which One Should You Actually Use?

Express is still everywhere. Fastify is faster. But is performance alone a good enough reason to switch?

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Full Stack / 11 min read

The New Skill Every Software Engineer Needs

The real skill in 2026 isn’t knowing how to use AI. It’s knowing when you shouldn’t.

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System Design / 17 min read

How Would You Design Ticketmaster? A System Design Interview Breakdown

If you think system design interviews are about drawing boxes and naming Kafka, Redis, and microservices, you are probably preparing the…

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Blog | Tech by Neha Gupta