node.js

Logging in Node.js

Logging is one of the most undervalued and most important features of an enterprise application. Logs is what makes a difference between spending sleepless nights catching a mysterious bug or reading a clear message about what exactly caused an application to crash. It is not just important to write logs. It is important to write logs in a right way. In this article we'll look at most popular Node.js logging solutions and how to use them in your application. console.log ----------------- Option #1 - console.log().

Deploying Node.js production. Part 1: Using pm2.

Once the development is complete - you are ready to share your application or with the world. Here comes the question: how exactly do you deploy it? Obviously, you can't just run "node main.js" and leave it like that. If the application crashes due to untested error or out of memory, you don't want your service to be interrupted. Instead the applicatoin should be automatically restarted, giving you some extra time to investigate the issues. NOTE: have you completed my other tutorials about building Node.js web chat and web game?

Creating Real-Time Chat with Node.js and Socket.IO

The way that people use internet evolved from static pages to Ajax and now to realtime web supported by standards like WebSockets and WebRTC. Making a real-time application, like chat, became increadibly easy with the help of platforms like Node.js and libraries like Socket.io. In this post we'll see how to create a minimalistic chat application form the scratch. Create a separate folder for your new project and type `npm init` in it. Then, install the required dependencies.

Handling File Uploads with Node.js and Express.js

Whether you are building social platform or a simple website, sometimes you need to let users upload their own files. The typical scenario might be: uploading the user's photo for a profile page. With Node.js and express it is quite easy to create your own file upload service. In this post I will show you how. In the new folder run `npm init`, and create `package.json` as you usually do for every fresh Node project.

Building REST service with Express.js

REST services became a de-facto standard of data exchange for public APIs. Twitter, GitHub, Parse are just few examples that rely on REST to exchange data with the clients. Before we start to write our first REST service with Node, let's see what exactly is REST and how it works. REST stands for 'REpresentational State Transfer'. It leverages the semantics of HTTP protocol to express operations over a some collection of items (data). REST typically uses JSON to send and receive data. NOTE: This is a common misconception to call every HTTP-based JSON service REST.