let-us-node.hashnode.devthis keyword in Javascript and its relationship with arrow functionsIf you’ve ever found yourself scratching your head over this in JavaScript, you’re not alone.It’s one of the most misunderstood yet most powerful concepts in the language. We often hear that: “Arrow functions don’t have their own this — they inherit...Oct 21, 2025·5 min read
let-us-node.hashnode.devDetailed System Design of Spotify: Architecture, Scalability, and ABR (HLS/DASH) Streaming LessonsDesigning scalable streaming platforms is one of the problems I like the most. I am obsessed with streaming platforms, both as a consumer and as a Software Engineer. Low latency streaming is one of the topics that always interests me and keeps me cur...Sep 15, 2025·11 min read
let-us-node.hashnode.devOptimizing Node.js Applications for Performance and ScalabilityStrategies to Handle High Traffic and Improve Efficiency To deliver a seamless user experience and maintain system reliability, it’s essential to build Node.js applications that are both robust and efficient. A well-optimized application can manage t...Feb 14, 2025·7 min read
let-us-node.hashnode.dev10 Open-Source Tools for the LLM WorldThe rapid advancement of large language models (LLMs) has sparked a surge of innovation in open-source tools, enabling developers to craft powerful AI-driven applications. From building chatbots to deploying generative AI solutions, these tools offer...Dec 27, 2024·7 min read
let-us-node.hashnode.devNode.js FS Module : Files, Directories, StreamsHey everyone, In this article, we’re going to dive deep into the fs module in Node.js and explore its capabilities in detail. The fs module, short for File System, is a built-in module in Node.js that provides a range of functionalities to work with ...Dec 24, 2024·7 min read