Introduction In the real world, users do not wait.If a web application takes more than a few seconds to load, people leave. Performance is not a luxury — it is a business requirement. In MERN applications, performance depends on: At CuriosityTech, performance optimization is taught as a professional engineering discipline, because fast applications are what […]
Day 20 – Performance Optimization for MERN Applications Read More »
Introduction As React applications grow, something invisible but dangerous starts to happen:state chaos. Buttons stop responding correctly, data appears in the wrong place, and bugs become unpredictable. This is where Redux becomes essential. It brings order, structure, and predictability to large-scale React applications. At CuriosityTech, Redux is not taught as a library — it is
Day 16 – Redux for State Management in Large React Apps Read More »
Introduction When modern applications talk to each other, they do not use HTML pages. They use APIs.Every mobile app, React dashboard, payment system, and cloud service communicates through REST APIs. In the MERN stack, Express.js is the gateway that handles this communication. After two decades of building backend systems, I can confidently say that the
Day 12 – REST API Development in Express.js Step-by-Step Read More »
Introduction When developers move from frontend to full stack using MERN, they enter a new world: server-side JavaScript.Node.js is not just another runtime — it is what allows JavaScript to leave the browser and power servers, APIs, real-time apps, and enterprise platforms. In professional training environments like CuriosityTech, where learners are groomed for real company
Day 8 – Node.js Fundamentals: Event Loop & Modules Explained Read More »
Introduction Every MERN developer dreams of building powerful React interfaces and scalable Node.js backends. But what most beginners do not realize is that every advanced MERN application is still built on three silent foundations:HTML, CSS, and JavaScript. After more than two decades of writing and reviewing web applications for startups, enterprises, and SaaS companies, I
Day 4 – HTML, CSS & JavaScript Basics for MERN Beginners Read More »