In this article, we will learn How to avoid data overload in EF Core, which improves the performance of applications.

It is a common mistake to retrieve the entire entities when only a subset of their properties is needed. This can lead to unnecessary data transfer, increased memory usage, and decreased performance. As you can see in the below code snippet.

           var customer = AppDbContext.Customer.ToList();

            foreach (var cust in customer)
            {
                Console.WriteLine($"{cust.Name} |  {cust.Address} | {cust.Type}");
            }         

To prevent data overload in EF Core, we will use projections to pick just the required fields and avoid retrieving unnecessary fields

 var customer = AppDbContext.Customer
                            .select(c => new { c.Name, c.Address, c.Type })
                            .ToList();

            foreach (var cust in customer)
            {
                Console.WriteLine($"{cust.Name} |  {cust.Address} | {cust.Type}");
            }

This above code snippet reduces the amount of data retrieved from the database minimizes memory usage, and improves the overall performance of your application.

See More: How to Check if a string is numeric in C#

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