gitlab-org--gitlab-foss/changelogs/unreleased/foreign-keys-for-project-mo...

---
title: Speed up project removals by adding foreign keys with cascading deletes to various tables
merge_request:
author:
Add many foreign keys to the projects table This removes the need for relying on Rails' "dependent" option for data removal, which is _incredibly_ slow (even when using :delete_all) when deleting large amounts of data. This also ensures data consistency is enforced on DB level and not on application level (something Rails is really bad at). This commit also includes various migrations to add foreign keys to tables that eventually point to "projects" to ensure no rows get orphaned upon removing a project. 2017-05-30 11:54:59 +00:00			`---`
			`title: Speed up project removals by adding foreign keys with cascading deletes to various tables`
			`merge_request:`
			`author:`