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goutomroy/medium_django_db_optimization_foreign_key_values.py

Last active June 8, 2019 11:54
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medium_django_db_optimization_foreign_key_values.py
# Don't. Needs database hit
blog_id = Entry.objects.get(id=200).blog.id
# Do. The foreign key is already cached, so no database hit
blog_id = Entry.objects.get(id=200).blog_id
# Do. No database hit
blog_id = Entry.objects.select_related('blog').get(id=200).blog.id
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