performance tuning of the database access for much faster api calls

ooemperor · May 23, 2024 · 2710b14 · 2710b14
1 parent d53932c
commit 2710b14
Show file tree

Hide file tree

Showing 2 changed files with 4 additions and 3 deletions.
diff --git a/codeGrader/backend/db/Exercise.py b/codeGrader/backend/db/Exercise.py
@@ -78,7 +78,7 @@ class Exercise(Base):
         passive_deletes=True,
         lazy="subquery",
         join_depth=3,
-        backref=backref("TaskExercise", lazy="joined", join_depth=3)
+        backref=backref("TaskExercise", lazy="subquery", join_depth=3)
     )
 
     def get_profile(self):

diff --git a/codeGrader/backend/db/Subject.py b/codeGrader/backend/db/Subject.py
@@ -72,7 +72,8 @@ class Subject(Base):
         cascade="all",
         passive_deletes=True,
         lazy="subquery",
-        backref=backref("ExerciseSubject", lazy="joined")
+        join_depth=1,
+        backref=backref("ExerciseSubject", lazy="joined", join_depth=1)
     )
 
     memberships = relationship(
@@ -83,7 +84,7 @@ class Subject(Base):
         cascade="all",
         passive_deletes=True,
         lazy="noload",
-        backref=backref("MembershipSubject", lazy="joined", join_depth=3)
+        backref=backref("MembershipSubject", lazy="joined", join_depth=2)
     )
 
     def get_profile(self) -> dict: