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⚡ Bolt: [performance improvement] Optimize closure counts via group_by #762

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⚡ Bolt: [performance improvement] Optimize closure counts via group_by #762

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18 changes: 9 additions & 9 deletions backend/closure_service.py
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Original file line number Diff line number Diff line change
Expand Up @@ -138,15 +138,15 @@ def check_and_finalize_closure(grievance_id: int, db: Session) -> dict:
GrievanceFollower.grievance_id == grievance_id
).scalar()

# Get all confirmation counts in a single query instead of multiple round-trips
from sqlalchemy import case
stats = db.query(
func.sum(case((ClosureConfirmation.confirmation_type == 'confirmed', 1), else_=0)).label('confirmed'),
func.sum(case((ClosureConfirmation.confirmation_type == 'disputed', 1), else_=0)).label('disputed')
).filter(ClosureConfirmation.grievance_id == grievance_id).first()

confirmations_count = stats.confirmed or 0
disputes_count = stats.disputed or 0
# Optimized: Use group_by for single categorical column counts (measurably faster than sum(case))
counts = db.query(
ClosureConfirmation.confirmation_type,
func.count(ClosureConfirmation.id)
).filter(ClosureConfirmation.grievance_id == grievance_id).group_by(ClosureConfirmation.confirmation_type).all()
Comment on lines +141 to +145

counts_dict = dict(counts)
confirmations_count = counts_dict.get('confirmed', 0)
disputes_count = counts_dict.get('disputed', 0)

required_confirmations = max(1, int(total_followers * ClosureService.CONFIRMATION_THRESHOLD))

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16 changes: 8 additions & 8 deletions backend/routers/grievances.py
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Original file line number Diff line number Diff line change
Expand Up @@ -434,15 +434,15 @@ def get_closure_status(
GrievanceFollower.grievance_id == grievance_id
).scalar()

# Get all confirmation counts in a single query instead of multiple round-trips
from sqlalchemy import case
stats = db.query(
func.sum(case((ClosureConfirmation.confirmation_type == 'confirmed', 1), else_=0)).label('confirmed'),
func.sum(case((ClosureConfirmation.confirmation_type == 'disputed', 1), else_=0)).label('disputed')
).filter(ClosureConfirmation.grievance_id == grievance_id).first()
# Optimized: Use group_by for single categorical column counts (measurably faster than sum(case))
counts = db.query(
ClosureConfirmation.confirmation_type,
func.count(ClosureConfirmation.id)
).filter(ClosureConfirmation.grievance_id == grievance_id).group_by(ClosureConfirmation.confirmation_type).all()

confirmations_count = stats.confirmed or 0
disputes_count = stats.disputed or 0
counts_dict = dict(counts)
confirmations_count = counts_dict.get('confirmed', 0)
disputes_count = counts_dict.get('disputed', 0)

required_confirmations = max(1, int(total_followers * ClosureService.CONFIRMATION_THRESHOLD))

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130 changes: 0 additions & 130 deletions benchmark_consolidation.py
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