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ToArray vs ToList EF
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‎BenchmarkToArrayToListEF/BenchmarkToArrayToListEF.csproj

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<Project Sdk="Microsoft.NET.Sdk">
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<PropertyGroup>
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<OutputType>Exe</OutputType>
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<TargetFramework>net8.0</TargetFramework>
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<LangVersion>preview</LangVersion>
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<ImplicitUsings>enable</ImplicitUsings>
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<Nullable>enable</Nullable>
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</PropertyGroup>
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<ItemGroup>
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<PackageReference Include="BenchmarkDotNet" Version="0.14.0" />
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<PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="8.0.8" />
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</ItemGroup>
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</Project>

‎BenchmarkToArrayToListEF/BenchmarkToArrayToListEF.sln

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Microsoft Visual Studio Solution File, Format Version 12.00
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "BenchmarkToArrayToListEF", "BenchmarkToArrayToListEF.csproj", "{9DFB9CE7-BB4E-4C07-9581-0B4123B1E641}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|Any CPU = Debug|Any CPU
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Release|Any CPU = Release|Any CPU
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EndGlobalSection
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GlobalSection(ProjectConfigurationPlatforms) = postSolution
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{9DFB9CE7-BB4E-4C07-9581-0B4123B1E641}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{9DFB9CE7-BB4E-4C07-9581-0B4123B1E641}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{9DFB9CE7-BB4E-4C07-9581-0B4123B1E641}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{9DFB9CE7-BB4E-4C07-9581-0B4123B1E641}.Release|Any CPU.Build.0 = Release|Any CPU
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EndGlobalSection
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EndGlobal

‎BenchmarkToArrayToListEF/BlogContext.cs

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using Microsoft.EntityFrameworkCore;
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public class BlogContext : DbContext
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{
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public DbSet<BlogPost> BlogPosts { get; set; }
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public BlogContext(DbContextOptions options)
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: base(options)
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{
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}
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protected override void OnModelCreating(ModelBuilder modelBuilder)
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{
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modelBuilder.ApplyConfiguration(new BlogPostConfiguration());
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}
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}

‎BenchmarkToArrayToListEF/BlogPost.cs

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public class BlogPost
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{
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public int Id { get; set; }
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public required string Title { get; set; }
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public required string Subtitle { get; set; }
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public DateTime PublishDate { get; set; }
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public int Likes { get; set; }
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}

‎BenchmarkToArrayToListEF/BlogPostConfiguration.cs

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using Microsoft.EntityFrameworkCore;
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using Microsoft.EntityFrameworkCore.Metadata.Builders;
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public class BlogPostConfiguration : IEntityTypeConfiguration<BlogPost>
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{
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public void Configure(EntityTypeBuilder<BlogPost> builder)
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{
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builder.Property(b => b.Title)
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.HasMaxLength(4000)
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.IsRequired();
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builder.Property(b => b.Subtitle)
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.HasMaxLength(4000)
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.IsRequired();
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}
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}

‎BenchmarkToArrayToListEF/DataSeeder.cs

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public static class DataSeeder
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{
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public static void Seed(BlogContext context, int numberOfPosts)
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{
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var blogPosts = new List<BlogPost>();
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for (var i = 1; i <= numberOfPosts; i++)
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{
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blogPosts.Add(new BlogPost
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{
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Title = $"Title {i}",
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Subtitle = $"Subtitle {i}",
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PublishDate = DateTime.Now.AddDays(-i),
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Likes = i
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});
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}
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context.BlogPosts.AddRange(blogPosts);
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context.SaveChanges();
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}
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}

‎BenchmarkToArrayToListEF/Program.cs

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using System.Data.Common;
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using BenchmarkDotNet.Attributes;
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using BenchmarkDotNet.Running;
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using Microsoft.Data.Sqlite;
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using Microsoft.EntityFrameworkCore;
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[MemoryDiagnoser]
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public class ToArrayVsToListBenchmark
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{
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private BlogContext? _context;
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private DbConnection? _connection;
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[GlobalSetup(Targets = [nameof(ToArrayAsyncBenchmark), nameof(ToListAsyncBenchmark)])]
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public void Setup()
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{
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_connection = CreateInMemoryConnection();
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var options = new DbContextOptionsBuilder()
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.UseSqlite(_connection)
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.Options;
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_context = new BlogContext(options);
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_context.Database.EnsureDeleted();
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_context.Database.EnsureCreated();
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DataSeeder.Seed(_context, 10000);
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}
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[Params(100, 1000, 10000)]
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public int NumberOfElements { get; set; }
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[Benchmark]
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public async Task<List<BlogPost>> ToListAsyncBenchmark()
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{
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return await _context!.BlogPosts.Take(NumberOfElements).ToListAsync();
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}
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[Benchmark]
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public async Task<BlogPost[]> ToArrayAsyncBenchmark()
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{
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return await _context!.BlogPosts.Take(NumberOfElements).ToArrayAsync();
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}
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[GlobalCleanup]
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public void Cleanup()
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{
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_context?.Dispose();
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_connection?.Dispose();
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}
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public static void Main() => BenchmarkRunner.Run<ToArrayVsToListBenchmark>();
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private static SqliteConnection CreateInMemoryConnection()
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{
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var connection = new SqliteConnection(string.Empty);
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connection.Open();
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return connection;
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}
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}

‎BenchmarkToArrayToListEF/README.md

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# ToArray(Async) vs ToList(Async) in Entity Framework 8
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When retrieving data from your database with **Entity Framework**, there are two major options: `ToArray` and `ToList`. Besides the different return type, is there any significant difference in performance between the two? Let's find out!
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Found [here](https://steven-giesel.com/blogPost/4ec751cd-d773-44c2-996e-cc4ae9ae966c)

‎README.md

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| BlogPost | Publish Date |
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| -------------------------------------------------------------------------------------------------------------- | ------------ |
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| [ToArray(Async) vs ToList(Async) in Entity Framework 8(BenchmarkToArrayToListEF/)] | 28.10.2024 |
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| [How to test HttpClient inside API Tests](FakeHttpClient/) | 02.09.2024 |
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| [Fluent API to await multiple calls and get their respective results](TaskWhenAllResult/) | 12.04.2024 |
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| [An asynchronous lock free ring buffer for logging](LockFreeRingBuffer/) | 03.01.2024 |

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