Serna's Fix N + 1

BH Serna's "Fix n+1 queries on Rails" is a short, reasonably in-depth look at the n+1 problem commonly arising through indiscriminate use of ORMs such as Active Record. The nice thing about Serna's treatment is that it's well-suited for example implementation, as shown in this repo.

Links for n+1

It's a well-understood problem, which all engineers using Rails (or Active Record) engineering should be well acquainted with. These are some excellent resources:

• https://evilmartians.com/chronicles/squash-n-plus-one-queries-early-with-n-plus-one-control-test-matchers-for-ruby-and-rails
• https://github.com/nepalez/rspec-sqlimit
• https://github.com/palkan/n_plus_one_control?tab=readme-ov-file
• https://github.com/charkost/prosopite/tree/main
• https://github.com/flyerhzm/bullet
• https://bhserna.com/5-ways-to-fix-the-latest-comment-n-1-problem.html

Benito Serna's posts

• https://bhserna.com/tool-to-run-the-latest-n-of-each-record-examples
• https://bhserna.com/5-ways-to-fetch-the-latest-n-of-each-record-on-rails.html#fetch_all
• https://github.com/bhserna?page=1&tab=repositories