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Introduction: Credit Card Validation Happens Before the Bank When a user enters a credit card number and clicks Pay, the […]

Introduction: One Request, One Result — Always In banking and payment systems, the most dangerous bug is not a crash

Introduction: Distributed Systems Are No Longer Optional There was a time when distributed systems were considered an advanced topic, something

System Design is often treated as an advanced topic—something to learn after years of coding. That mindset is wrong. In

This roadmap is designed for someone who wants a clear, structured, and realistic path to become an AI Engineer —

Introduction For years, backend development revolved around a simple idea: servers live in data centers. Requests travel from users to

Learn With Us Swiggy SDE-1 Interview Experience If you’re aiming for an SDE-1 role at Swiggy, you’re signing up for

Learn With Us Groww SDE-1 Interview: A Complete Breakdown If you’re aiming for a product-engineering role in Indian fintech, Groww

Learn With Us Uber SDE Interview Experience (2025) – Complete Breakdown If you’re aiming for an SDE role at Uber,

Learn With Us Paytm SDE-1 Interview Experience (2024–25) A step-by-step prep guide from CodeKerdos mentors & learners who got offers