1 min readFeb 13, 2020
Hey Igor, Glad you liked the article.
Joins can slow a query but they are often necessary to display relevant information. the main difference between select_related and prefetch_related is that prefetch is used with many to many relations.
You might find this article about prefetch_related useful
https://hakibenita.com/all-you-need-to-know-about-prefetching-in-django