Running an Ubuntu or Debian operating system on your servers comes with a long lifetime. You won’t switch servers and migrate your applications that often. You’ll maintain your system now and then and update installed packages to keep your system secure. Recently, while maintaining the software on our …

You implemented refresh token handling for multiple devices in the previous tutorial. The core of that implementation lives in the route handler which assigns the route handler for the refresh token three tasks: find an active refresh token for the incoming input invalidate the incoming refresh token create a new …

This tutorial extends the previous tutorial on refresh tokens with JWT Authentication for logins on multiple devices. The implementation from the previous tutorial works well for a single login because you allow a single refresh token. As soon as your users log in from different devices, the last login has …

Installing packages with the apt-get package manager on Ubuntu or Debian usually fetches the latest known version from the repositories. This is a comfortable behavior to use an up-to-date version of the package. If you want to install a specific package version, you can do that by appending an equal …

Authenticating users with JSON web tokens is a convenient strategy. The tokens are self-contained and may include all required information. The server side verifies a token, either trusts its digital signature and proceeds the request handling or declines processing. Two previous tutorials walk you through the process of generating JSON …

Mocha is a powerful testing framework for Node.js. It gives you dozens of helpful utilities to create a convenient testing setup. Mocha also provides an interceptable testing lifecycle. If you need to run setup and teardown tasks for your test suite, make sure to read on! {{outline}} Testing Setup …

This is the final tutorial in the “Build a Rate Limiter” series. The rate limiter has all important features to increase your application security. As with any software project, you should put aside time to review and refactor the code. By finishing this tutorial, you’ll push your rate limiter …