ANAshwin Narendra Bhanageinchai-aur-js.hashnode.dev·May 5 · 5 min readAsync Code in Node.js: Callbacks and Promises1. Introduction Node.js is designed to handle multiple operations efficiently without blocking execution. Unlike traditional systems where tasks run one after another, Node.js uses asynchronous execut00
ANAshwin Narendra Bhanageinchaiaurbackend.hashnode.dev·May 5 · 5 min readSessions vs JWT vs Cookies: Understanding Authentication Approaches1. Introduction Authentication is the process of verifying who a user is. Every application—login systems, dashboards, APIs—needs a way to identify users across multiple requests. HTTP is stateless, m00
ANAshwin Narendra Bhanageinchaiaurbackend.hashnode.dev·May 5 · 5 min readStoring Uploaded Files and Serving Them in Express1. Introduction File uploads are a common requirement in backend systems—profile images, documents, media files. The moment a file is uploaded, two problems appear: Where to store the file How to se00
ANAshwin Narendra Bhanageinchai-aur-js.hashnode.dev·Apr 8 · 4 min readError Handling in JavaScript: Try, Catch, Finally1. Introduction Errors are a normal part of programming. In JavaScript, errors occur when something goes wrong during code execution, such as accessing an undefined variable or performing an invalid o00
ANAshwin Narendra Bhanageinchai-aur-js.hashnode.dev·Apr 8 · 4 min readAsync/Await in JavaScript: Writing Cleaner Asynchronous Code1. Introduction JavaScript frequently deals with operations that take time, such as API calls, file handling, and timers. These are handled asynchronously so the program does not block execution. Earl00
