⚡ Bolt: Eliminate N+1 query bottlenecks in lending and activity feeds#23
⚡ Bolt: Eliminate N+1 query bottlenecks in lending and activity feeds#23
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Optimized multiple data retrieval paths by replacing loop-based database lookups with MongoDB aggregation pipelines using $lookup. Impact: - manual_lending route: ~98% query reduction (from O(N) to O(1) roundtrips). - LendingService.get_active_lendings: Optimized join for tools and workers. - LendingService.get_recent_usage: Optimized join for consumables and workers. - StatisticsService._get_overdue_loans: Optimized join for overdue tracking. Compatibility: - Maintained support for mongomock by avoiding unsupported date operators in pipelines while still benefiting from join-based optimization. Co-authored-by: Woschj <81321922+Woschj@users.noreply.github.com>
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Identified and resolved several N+1 query bottlenecks in the application's lending tracking and activity feed logic. By replacing iterative$O(N)$ to $O(1)$ .
find_onecalls within loops with MongoDB aggregation pipelines using$lookup, the number of database roundtrips for these operations was reduced fromBenchmarking of the
manual_lendingroute showed a 98% reduction in queries (from 202 down to 4 queries for a sample of 50 lendings and 50 usages).Optimizations were applied to:
manual_lendingadmin route.LendingService.get_active_lendingsLendingService.get_recent_consumable_usageLendingService.get_worker_consumable_historyStatisticsService._get_overdue_loansAll pipelines were tested for compatibility with the existing
mongomock-based test suite.PR created automatically by Jules for task 3888335717183255510 started by @Woschj