Bulk Insert Optimization in .NET / EF Core

问题

I have some .NET Core code that does some bulk loading of the DB with random sample data.

I'm getting 20 inserts/second on localhost, and looking to improve my performance. I'm doing the basic stuff like calling _dbContext.SaveChanges() only once, etc.

A number of posts like this indicate gains can be had by manipulating properties on the DbContext's Configuration, such as Configuration.AutoDetectChangesEnabled and Configuration.ValidateOnSaveEnabled.

My .NET Core MVC app's DbContext is a subclass of IdentityDbContext, which does not expose the Configuration.

Not sure what approach I should be using - can I / should I be messing with those configuration properties of a IdentityDbContext subclass?

Or, should I use a separate DbContext for this? (Some early research indicated the typical pattern is a single DbContext for a webapp).

回答1:

There is no need for creating separated DbContext class and you can turn change tracking off:

context.ChangeTracker.AutoDetectChangesEnabled = false;

or you can turn it off globaly:

public class MyContext : IdentityDbContext
{
   public MyContext()
    {
         ChangeTracker.AutoDetectChangesEnabled = false;
    }
}

来源：https://stackoverflow.com/questions/41412953/bulk-insert-optimization-in-net-ef-core