Chris “Woody” Woodruff • 7/7/2026

The N+1 Query Problem in EF Core: Detection, Diagnosis, and Permanent Fixes

This article explains the N+1 query problem in Entity Framework Core, a common performance issue where loading parent rows triggers additional queries for related data. It covers detection methods, diagnosis techniques, and permanent fixes, including three shapes of N+1 often missed, how to catch it proactively, and solutions in EF Core 10. Practical code examples and real-world scenarios help developers optimize database queries and avoid production slowdowns.

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#performance optimization #c #linq