EF Extensions - BulkSaveChanges - Documentation - BulkSaveChangesAsync(bool useEntityFrameworkPropagation, Action<BulkOperation> bulkOperationFactory)

CSharp · Console

/Program.cs

// Entity Framework Extensions
// Doc: https://entityframework-extensions.net/bulk-savechanges

// @nuget: Z.EntityFramework.Extensions
// @nuget: EntityFramework

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Data.Entity;
using System.Threading;
using System.Threading.Tasks;
					
public class Program
{
	public static List<BenchmarkResult> BenchmarkResults = new List<BenchmarkResult>();
	
	public static void Main()
	{
		MainAsync().Wait();
	}
	
	public static async Task MainAsync()
	{
		JustInTime_Compile();
		//await JustInTime_Compile();
		
		// Generate X entities
		var customers = GenerateCustomers(1000);
		
		var clockSaveChanges = new Stopwatch();
		var clockBulkSaveChanges = new Stopwatch();
		
		using (var context = new EntityContext())
		{
			// SaveChangesAsync
			context.Customers.AddRange(customers);
			clockSaveChanges.Start();
			context.SaveChanges();
			//await context.SaveChangesAsync();
			clockSaveChanges.Stop();

			BenchmarkResults.Add(new BenchmarkResult() { Action = "SaveChangesAsync (Entity Framework)", Entities = customers.Count, Performance = clockSaveChanges.ElapsedMilliseconds + " ms" });
		}
		using (var context = new EntityContext())
		{
			// BulkSaveChangesAsync
			context.Customers.AddRange(customers);
			clockBulkSaveChanges.Start();
			await context.BulkSaveChangesAsync(false, options => options.BatchSize = 100);
			clockBulkSaveChanges.Stop();

			BenchmarkResults.Add(new BenchmarkResult() { Action = "BulkSaveChangesAsync", Entities = customers.Count, Performance = clockBulkSaveChanges.ElapsedMilliseconds + " ms" });
		}
		
		FiddleHelper.WriteTable("EFE - High-performance bulk operations", BenchmarkResults);
	}
	
	public static async Task JustInTime_Compile()
	{
		var customers = GenerateCustomers(20);
		
		// SaveChangesAsync
		using (var context = new EntityContext())
		{
			context.Customers.AddRange(customers);
			await context.SaveChangesAsync();
			context.Customers.RemoveRange(customers);
			await context.SaveChangesAsync();
		}
		
		// BulkSaveChangesAsync
		using (var context = new EntityContext())
		{
			context.Customers.AddRange(customers);
			await context.BulkSaveChangesAsync(false, options => options.BatchSize = 100);
			context.Customers.RemoveRange(customers);
			await context.BulkSaveChangesAsync(false, options => options.BatchSize = 100);
		}
	}
	
	public static List<Customer> GenerateCustomers(int count)
	{
		var list = new List<Customer>();
		
		for(int i = 0; i < count; i++)
		{
			list.Add(new Customer() { Name = "Customer_" + i, Description = "Description_" +  i, IsActive = i % 2 == 0 });
		}

		return list;
	}
	
	public class EntityContext : DbContext
	{
		public EntityContext() : base(FiddleHelper.GetConnectionStringSqlServer())
		{

		}
		
		public DbSet<Customer> Customers { get; set; }
	}

	public class Customer
	{
		public int CustomerID { get; set; }
		public string Name { get; set; }
		public string Description { get; set; }
		public Boolean IsActive { get; set; }
	}
	
	public class BenchmarkResult
	{
		public string Action { get; set; }
		public int Entities { get; set; }
		public string Performance { get; set; }
	}
}