How do you manage performance and memory usage in Entity Framework (EF)?

To manage performance and memory in EF Core, I use several techniques based on the scenario. For read-only queries, I always use AsNoTracking() to avoid unnecessary change tracking. I use projections with DTOs to select only required fields and apply pagination or filtering to avoid loading large datasets into memory.

For bulk operations like importing data, I disable AutoDetectChanges and batch SaveChanges() to improve performance. I also watch out for N+1 issues by using Include() or better — projecting related data explicitly. In one of my past projects, optimizing a large reporting query with AsNoTracking() and DTO projections cut down memory by 70% and improved response time by 40%.

Finally, I always profile and log the generated SQL to catch expensive queries and ensure proper disposal of DbContext to avoid memory leaks

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