dix is a simple console application that will make your life easier if you are working with MySQL databases. Let's say that you are working with some PHP framework or CMS and that you want to test a new module/plugin/add-on, or maybe you just want to upgrade to the latest version. The very first thing you should do is make a backup of your database. Doing this will save you a lot of headaches if something goes wrong.
The best way to install Drupal 8 and 9 is by using Composer. There are several options, but the most widely used and easiest way is to use the Composer template for Drupal projects.
Hierarchical Taxonomy Menu is a Drupal 8 and 9 module for creating menus from taxonomy terms.
If you are building any kind of API then you know, or at least you should know, that limiting the number of requests is one of the most important parts of your system. You don't want to allow anyone to hammer your endpoints without any kind of limitations. The more popular your app is becoming, the more you have to care about protecting your API endpoints.