---
title: "#chainlink articles | Hashnode"
description: "Explore 146 articles tagged #chainlink on Hashnode. Tutorials, guides, and how-tos from the community."
url: "https://hashnode.com/tag/chainlink"
---

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# #chainlink

146 posts · 10 followers

[DEVESH BAGHEL](https://hashnode.com/@deveshbaghel) · [May 10](https://hashnode.com/posts/the-node-js-event-loop-explained/6a001d89e3eebc2e203a0e36)

### [The Node.js Event Loop Explained](https://learnwithdevesh.hashnode.dev/the-node-js-event-loop-explained?utm_source=hashnode&utm_medium=feed)

Introduction Node.js mainly works on a single thread. This means only one task can run on the main thread at a time. But still, Node.js can handle thousands of requests efficiently. This becomes possi

4 min read · [learnwithdevesh.hashnode.dev](https://learnwithdevesh.hashnode.dev/the-node-js-event-loop-explained?utm_source=hashnode&utm_medium=feed)

[DEVESH BAGHEL](https://hashnode.com/@deveshbaghel) · [May 10](https://hashnode.com/posts/rest-api-design-made-simple-with-express-js/6a001c1ae3eebc2e2039231b)

### [REST API Design Made Simple with Express.js](https://learnwithdevesh.hashnode.dev/rest-api-design-made-simple-with-express-js?utm_source=hashnode&utm_medium=feed)

Introduction A REST API allows communication between the client and the server. For example: Mobile apps fetch data from servers Websites send login requests Frontend applications request product d

4 min read · [learnwithdevesh.hashnode.dev](https://learnwithdevesh.hashnode.dev/rest-api-design-made-simple-with-express-js?utm_source=hashnode&utm_medium=feed)

[DEVESH BAGHEL](https://hashnode.com/@deveshbaghel) · [May 10](https://hashnode.com/posts/handling-file-uploads-in-express-with-multer/6a00194ee3eebc2e20374cda)

### [Handling File Uploads in Express with Multer](https://learnwithdevesh.hashnode.dev/handling-file-uploads-in-express-with-multer?utm_source=hashnode&utm_medium=feed)

Introduction In web applications, users often upload: Images PDFs Videos Documents Handling file uploads in Express.js requires special middleware because normal Express cannot directly process

3 min read · [learnwithdevesh.hashnode.dev](https://learnwithdevesh.hashnode.dev/handling-file-uploads-in-express-with-multer?utm_source=hashnode&utm_medium=feed)

[DEVESH BAGHEL](https://hashnode.com/@deveshbaghel) · [May 10](https://hashnode.com/posts/blocking-vs-non-blocking-code-in-node-js/6a001d02e3eebc2e2039b493)

### [Blocking vs Non-Blocking Code in Node.js](https://learnwithdevesh.hashnode.dev/blocking-vs-non-blocking-code-in-node-js?utm_source=hashnode&utm_medium=feed)

Introduction In Node.js, understanding blocking and non-blocking code is very important because it directly affects server performance. Node.js is designed to handle multiple requests efficiently usin

3 min read · [learnwithdevesh.hashnode.dev](https://learnwithdevesh.hashnode.dev/blocking-vs-non-blocking-code-in-node-js?utm_source=hashnode&utm_medium=feed)

[DEVESH BAGHEL](https://hashnode.com/@deveshbaghel) · [May 10](https://hashnode.com/posts/why-node-js-is-perfect-for-building-fast-web-applications/6a001b36e3eebc2e20387f16)

### [Why Node.js is Perfect for Building Fast Web Applications](https://learnwithdevesh.hashnode.dev/why-node-js-is-perfect-for-building-fast-web-applications?utm_source=hashnode&utm_medium=feed)

Introduction Node.js is one of the most popular technologies for building fast and scalable web applications. Many modern companies use Node.js because it can handle multiple requests efficiently with

4 min read · [learnwithdevesh.hashnode.dev](https://learnwithdevesh.hashnode.dev/why-node-js-is-perfect-for-building-fast-web-applications?utm_source=hashnode&utm_medium=feed)

[DEVESH BAGHEL](https://hashnode.com/@deveshbaghel) · [May 10](https://hashnode.com/posts/what-is-middleware-in-express-and-how-it-works/6a001a6be3eebc2e203805e9)

### [What is Middleware in Express and How It Works](https://learnwithdevesh.hashnode.dev/what-is-middleware-in-express-and-how-it-works?utm_source=hashnode&utm_medium=feed)

Introduction In Express.js, middleware is one of the most important concepts. Middleware functions work between the request and the response. Whenever a client sends a request to the server, middlewar

3 min read · [learnwithdevesh.hashnode.dev](https://learnwithdevesh.hashnode.dev/what-is-middleware-in-express-and-how-it-works?utm_source=hashnode&utm_medium=feed)

[DEVESH BAGHEL](https://hashnode.com/@deveshbaghel) · [May 9](https://hashnode.com/posts/creating-routes-and-handling-requests-with-express/69ff6de2f239332df4db6c92)

### [Creating Routes and Handling Requests with Express](https://learnwithdevesh.hashnode.dev/creating-routes-and-handling-requests-with-express?utm_source=hashnode&utm_medium=feed)

Introduction Express.js is a popular framework built on top of Node.js. It helps developers create servers and APIs more easily. In Node.js, creating routes using the built-in HTTP module requires mor

3 min read · [learnwithdevesh.hashnode.dev](https://learnwithdevesh.hashnode.dev/creating-routes-and-handling-requests-with-express?utm_source=hashnode&utm_medium=feed)

[DEVESH BAGHEL](https://hashnode.com/@deveshbaghel) · [May 9](https://hashnode.com/posts/setting-up-your-first-node-js-application-step-by-step/69ff67e2f239332df4d7257c)

### [Setting Up Your First Node.js Application Step-by-Step](https://learnwithdevesh.hashnode.dev/setting-up-your-first-node-js-application-step-by-step?utm_source=hashnode&utm_medium=feed)

Introduction Node.js allows developers to run JavaScript outside the browser. It is widely used for building servers, APIs, and backend applications. In this article, we will learn how to install Node

2 min read · [learnwithdevesh.hashnode.dev](https://learnwithdevesh.hashnode.dev/setting-up-your-first-node-js-application-step-by-step?utm_source=hashnode&utm_medium=feed)

[DEVESH BAGHEL](https://hashnode.com/@deveshbaghel) · [May 9](https://hashnode.com/posts/how-node-js-handles-multiple-requests-with-a-single-thread/69ff666af239332df4d6134f)

### [How Node.js Handles Multiple Requests with a Single Thread](https://learnwithdevesh.hashnode.dev/how-node-js-handles-multiple-requests-with-a-single-thread?utm_source=hashnode&utm_medium=feed)

Introduction Node.js is known for handling thousands of requests efficiently, even though it works on a single thread. Many beginners think a single thread means Node.js can only handle one user at a

3 min read · [learnwithdevesh.hashnode.dev](https://learnwithdevesh.hashnode.dev/how-node-js-handles-multiple-requests-with-a-single-thread?utm_source=hashnode&utm_medium=feed)

[DEVESH BAGHEL](https://hashnode.com/@deveshbaghel) · [May 9](https://hashnode.com/posts/url-parameters-vs-query-strings-in-express-js/69ff6503f239332df4d50594)

### [URL Parameters vs Query Strings in Express.js](https://learnwithdevesh.hashnode.dev/url-parameters-vs-query-strings-in-express-js?utm_source=hashnode&utm_medium=feed)

Introduction In Express.js, data can be sent through URLs in different ways. The two most common methods are: URL Parameters Query Strings Both are used to send information from the client to the

3 min read · [learnwithdevesh.hashnode.dev](https://learnwithdevesh.hashnode.dev/url-parameters-vs-query-strings-in-express-js?utm_source=hashnode&utm_medium=feed)