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Feature flags make it possible to write A/B tests and to enable or disable features inside your app on-the-fly. This is highly beneficial when testing or rolling out new features.

The database is the holy grail of your application, but, given the unpredictable nature of software, you should always be prepared for the possibility of media, hardware and software failures. If any of these failures occurs, the main objective should be to ensure the database is back up and running as fast as possible while minimizing user disruption and simultaneously ensuring there is no data loss.

Almost every platform on the internet needs to be able to uniquely identify its users, and email addresses are the most common mechanism for achieving this. However, they are fraught with all manner of issues - from spam accounts to blatant trolls, perpetrated by bots and other malicious actors.

When an API receives more traffic than it can handle, it will crash and be unavailable until someone manually brings it back online. This is referred to as downtime. One of the most important aspects of maintaining a production application is minimizing downtime.

Every project with a significant amount of dependencies should implement semantic versioning in order to avoid preventable issues later on. This post gives a detailed overview of how to do so in Node

Two-factor authentication is one of the most important inventions on the internet. If you have a login system, there's no better time to understand how 2FA works than today.