Grouping together tests can help you to parallelize your integration tests and make your build times faster.
I set off down this path of enlightenment as I investigated a customer issue that “could never happen”.
If you are using an ORM in your projects, The N+1 query problem is definitely one of your issues. If you don't know that yet - well, may the Lord have mercy on your soul.
Database indexing is a development task. The most important information for indexing is not the storage system, or the configuration of the server - but instead how the application queries the data. This knowledge is not easily obtained from DBAs or external consultants - so it's on us, the developers.
In an earlier blog post, I touched upon the cardinal sin of performance issues - N+1 queries. In this blog post I am going to explain through a few examples what the N+1 query problem is, and also suggest how to fix each in your application code.
Honestly - the main reason I chose to move away from Wordpress and to GatsbyJS wasn't to upskill in the No. 2 Web Framework from 2020 (according to stackoverflow - but just because.. I liked it better.