feat: bookmarks rm user foreign key db constraint

openedx/core/djangoapps/bookmarks/migrations/0002_rm_db_user_foreign_key_constraint.py

@@ -0,0 +1,21 @@
+# Remove User foreign key constraint on bookmarks table. Improves writes performance.
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('bookmarks', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='bookmark',
+            name='user',
+            field=models.ForeignKey(db_constraint=False, on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL),
+        ),
+    ]

openedx/core/djangoapps/bookmarks/models.py

@@ -46,7 +46,7 @@ class Bookmark(TimeStampedModel):
 
     .. no_pii:
     """
-    user = models.ForeignKey(User, db_index=True, on_delete=models.CASCADE)
+    user = models.ForeignKey(User, db_index=True, on_delete=models.CASCADE, db_constraint=False)
     course_key = CourseKeyField(max_length=255, db_index=True)
     usage_key = UsageKeyField(max_length=255, db_index=True)
     _path = JSONField(db_column='path', help_text='Path in course tree to the block')