Articles tagged "Backend Development"
Hand-picked programming notes, guides, and tutorials for your placement preparation.
Django vs FastAPI in 2026: Which Python Framework to Choose?
Django or FastAPI—which Python framework should you choose in 2026? Compare architecture, performance, async support, ORM, AI integration, and developer experience to find the best fit for your next backend project.
LRU Cache Explained: HashMap + Doubly Linked List (Python Guide)
Learn how the LRU (Least Recently Used) Cache achieves constant-time get and put operations by combining a HashMap with a Doubly Linked List. This guide includes Python implementations, visual explanations, interview pitfalls, production-ready alternatives using OrderedDict, and real-world applications in Redis, databases, browsers, and operating systems.
Oracle Cloud Free Tier (2026): The Ultimate Guide to Free Deployment
Oracle Cloud's Always Free Tier offers one of the most generous permanent free cloud platforms available. Learn how to deploy Docker, Node.js, PostgreSQL, and full-stack applications on OCI's ARM instances while avoiding common pitfalls like capacity errors, firewall issues, and account restrictions.
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.
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.
Building a REST API from Scratch: A Step-by-Step Guide
Learn how to build a REST API from scratch using Node.js and Express.js. This beginner-friendly guide walks through creating a complete CRUD API, handling HTTP requests, testing with Postman, and preparing your application for production with best practices.
Introduction to GraphQL: The Future of API Design
GraphQL is revolutionizing API design by allowing clients to request exactly the data they need in a single query. Learn how GraphQL solves REST's over-fetching and under-fetching problems, understand its core concepts like schemas, queries, mutations, and resolvers, and discover when it's the right choice for modern web and mobile applications.