Tutorials

Take your programming skills to the next level with our latest articles on Node.js and backend development.

May 25, 2023

Manage Your Node.js Application in Production with PM2

When in production, a Node.js server must be able to automatically restart in the eventuality of a crash or a machine reboot. It must also be able to reload upon code change with a minimal amount of downtime.

May 14, 2023

Automatically Restart Your Node.js Application on File Change with Nodemon

When developing with Node.js, we need to manually kill and restart our application every time we update the code in order for the changes to be applied.

Apr 28, 2023

How to Execute Commands in a Running Docker Container

Applications running in Docker containers often require supervision and maintenance. However, because of the self-contained and isolated nature of containers, debugging, testing, configuring, or updating these applications can prove challenging without the right tool.

Apr 14, 2023

How to Unzip GZ and TAR Files on Linux

On Linux and Unix-like operating systems such as Ubuntu and MacOS, GZ and TAR files are two different types of archive files used to compress and package one or more files into a single file.

Apr 12, 2023

How to Undo the Last Commit in Git

Undoing commits in Git allows you to correct mistakes, make changes, or revert code, while keeping a project's history organized and easy to understand.

Apr 05, 2023

How to Mock Functions, Classes, and Modules With Jest

A mock is a special type of function that allows to temporarily override the implementation of a single function, class, or module, to give it another behaviour in order to test it in isolation from external dependencies.

Mar 29, 2023

How to Backup a MySQL Database

A database backup is a copy of the data stored in a database which can be used to restore the database to a previous state in case of data loss, corruption, or other issues.

Mar 17, 2023

Build a Custom Payload Validation Middleware for ExpressJS

The second and probably most important part of the data handling process after parsing is called validation, as indeed, parsing alone is not enough to guarantee that the data sent by a user or another application respects the API contract.

Mar 09, 2023

Build a Custom Error-Handling Middleware for ExpressJS

The Express framework comes with a built-in error-handling middleware responsible for catching any runtime errors the application might encounter, thus preventing it from crashing.

Mar 04, 2023

The Three-Layer Architecture for Node.js Application

To improve their maintainability and flexibility, applications are often divided into several logical layers; a layer being an abstraction designed to satisfy a particular business need.

Feb 20, 2023

Automate and Schedule Tasks on Linux With Cron

cron is a time-based task scheduler that allows developers and system administrators to automate the execution of commands and scripts at specific times or intervals, down to the minute.

Feb 14, 2023

Publish Your Own NPM Package in 2 Minutes

Learn how to publish your own Node.js package on the public npm registry.

Feb 07, 2023

How to Perform CRUD Operations on MySQL With Sequelize

Sequelize is a Node.js Object-Relational Mapper (ORM) that features SOLID transaction support, relations, eager/lazy loading and read replication, among other things.

Feb 01, 2023

Manage Multiple Node.js Versions With Homebrew

Homebrew is a free and open-source software package management system that simplifies the installation of binaries and graphical applications on MacOS

Jan 26, 2023

2 Database Scaling Patterns Every Developer Should Know

When an application grows, wether in terms of functionalities or users, the load on its database usually increases too, due to the fact that more data is stored and retrieved.

Jan 26, 2023

Run a Secure SSH Server With Docker in 3 Steps

Learn how to build and run a secure SSH server in a Docker container.

Jan 22, 2023

A Beginner's Guide to Express Middlewares

Since Express is, by design, very minimalistic in terms of functionalities, the framework offers the possibility for developers to intercept an incoming HTTP request before it reaches the endpoint’s controller using a special type of function called a middleware.

Jan 17, 2023

Rate Limiting and Throttling

Rate limiting and throttling are strategies for limiting network traffic and API access.

Jan 14, 2023

How to Package a Node.js Application with Docker

Docker is an open-source software running on Windows, Linux and MacOS, that enables developers to package their applications and dependencies together into a lightweight, standalone, and isolated unit called an image.

Jan 11, 2023

What is an API Gateway?

An API Gateway is a service that sits between a client and one or more backend services, and provides a single and consistent entry point for the requests sent to these services, regardless of their architecture.

Jan 07, 2023

Write Unit Tests with Jest in Node.js

Jest is a clean and concise JavaScript testing framework developed and maintained by Facebook.

Jan 07, 2023

A Simple Introduction to Microservices

In software engineering, a microservice is a service that meets a very specific business need, like for example: handling payment methods, sending emails or managing authentication.

Dec 22, 2022

4 Authentication Schemes Every Developer Should Know

Dec 16, 2022

Working with JSON Web Tokens in Node.js

A JSON Web Token often abbreviated JWT is a compact, self-contained and digitally signed token, that uses the JSON format to transmit information between parties.

Dec 08, 2022

Build a JSON Body-Parsing Middleware in Node.js

In Express, a middleware is a special type of function that allows to intercept incoming HTTP requests before they reach the controller.

Nov 27, 2022

Serve HTTPS with Node.js and Nginx

Learn how to leverage Nginx to handle and forward internet traffic to a simple Node.js application through HTTPS.

Oct 24, 2022

Build a Dynamic Configuration Loader in Node.js

In programming, the configuration is a list of key-value pairs used to configure the parameters and initial settings of computer programs in order to customize their behaviour.

Jun 28, 2022

An Introduction to Service Discovery

In a traditional application, the network location of service instances are usually quite static and can be loaded from a configuration file, that is from time to time manually updated by system administrators.

Jun 03, 2022

5 Caching Implementations You Should Know

In this article, we'll go over 5 of the most well-known and used caching implementations you should know as a developer, starting with in-memory caching.

May 30, 2022

An Introduction to Caching Patterns

A cache is a software component that stores a subset of transient data so that future requests for that data can be served faster.

May 17, 2022

The CAP Theorem Trade-Off

In a distributed system, like the ones based on a microservices architecture, there are three guarantees that can be traded-off against each other when it comes to data stores: consistency, availability, and partition tolerance.

May 09, 2022

An Overview of the REST Principles

The Representational State Transfer (REST) is a type of software architecture that defines a set of constraints or principles, designed to guide the development of network-based applications, and more specifically client-server applications.

Apr 28, 2022

A Simple Definition of the CI/CD Pipeline

Continuous Integration / Delivery / Deployment is a method to deliver much faster updates to end-users by introducing automation into the stages of software development.

Apr 25, 2022

A Simple Approach to Test-Driven Development

Software testing is a method to check if whether the actual product matches the expected requirements.

Apr 22, 2022

A Better Definition of the DRY Programming Principle

One of the most frequently disregarded and misunderstood coding principle by junior developers is the DRY principle which stands for Dont Repeat Yourself.