System Design Articles

Backend Development Jul 01, 2026

Firebase vs Supabase vs Convex (2025): Which Backend Should You Choose?

Compare Firebase, Supabase, and Convex across database architecture, real-time features, authentication, pricing, developer experience, scalability, and vendor lock-in to choose the right Backend-as-a-Service for your next project.

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Data Structures & Algorithms Jun 30, 2026

Prefix Sum vs Difference Array: Master Range Queries and Range Updates in DSA

Struggling with Time Limit Exceeded (TLE) errors in array problems? Learn how Prefix Sums and Difference Arrays transform expensive O(N×Q) solutions into efficient O(N+Q) algorithms. This guide covers the intuition, formulas, Python implementations, complexity analysis, and interview tips you need to master both techniques.

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Backend Development Jun 29, 2026

Razorpay Django Integration: Secure Payment Gateway with Signature Verification

Integrating Razorpay into Django isn't just about opening a checkout popup—it's about building a secure payment workflow. This step-by-step guide walks you through creating Razorpay orders, implementing the checkout page, verifying payment signatures on the backend, and preparing your application for production with webhooks, refunds, and idempotency.

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Career Guidance Jun 23, 2026

AI Won't Replace Software Developers — Developers Who Use AI Will (The 2026 Reality)

AI isn't replacing software developers—it's transforming the role. Learn why architecture, system design, and AI collaboration are the skills that will define successful engineers in 2026.

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