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    Guided course · Data Access in .NET

    EF Core Performance and Behavior: back to the course

    Module 2 · Reading Data Efficiently · Lesson 3 of 18

    AsNoTracking, Identity Resolution and the Real Cost of Tracking

    15 min readTechInterviewNotes Editorial TeamUpdated 13 Oct 2026Save

    This lesson comes with Full Access

    Its text, video and cheat sheet open with Full Access. This course's free lessons open without an account. Start with How EF Core Runs a Query: Expression Trees, SQL, Logging and ToQueryString.

    See Full AccessCourse outline