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Insights, tutorials, and career tips from the engineering community
Imagine you're using Uber. You request a ride. Within seconds, your request reaches an available driver near you. But here's the interesting question. How did Uber know which driver service to contact?
Imagine you're scrolling through your Instagram feed. You like a post. Your friend refreshes their phone immediately. For a few seconds... they still don't see your like. Did the system lose your data? No.
Imagine you're transferring ₹10,000 from your bank account to your friend's account. The process looks simple. Your account balance decreases. Your friend's balance increases. Now imagine something goes wrong halfway through. Your account is debited. But your friend's account is never credited because the database crashed. The money disappears.
Build employer-trusted certificate verification: unique IDs, QR codes, public lookup APIs, fraud prevention, and why blockchain is usually optional.
Design points, badges, streaks, and spin wheels that increase course completion without cheap dopamine traps—ethics, data, and LMS implementation patterns.
How an online academy shipped live class alerts, assignment nudges, and admin broadcasts with ASP.NET Core SignalR—scaling, auth, and failure modes included.
Architecture lessons from a production LMS: bounded contexts, video delivery, progress tracking, multi-tenancy, and why the first version should not be 40 microservices.
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