Muhammed Majid Optimization

AuthorDTO_Optimized.cs

@@ -0,0 +1,15 @@
+using System.Collections.Generic;
+
+namespace OptimizeMePlease
+{
+    public class AuthorDTO_Optimized
+    {
+        public string UserFirstName { get; set; }
+        public string UserLastName { get; set; }
+        public string UserName { get; set; }
+        public string UserEmail { get; set; }
+        public int AuthorAge { get; set; }
+        public string AuthorCountry { get; set; }
+        public IEnumerable<BookDto_Optimized> AllBooks { get; set; }
+    }
+}

BenchmarkService.cs

@@ -1,6 +1,7 @@
 using BenchmarkDotNet.Attributes;
 using Microsoft.EntityFrameworkCore;
 using OptimizeMePlease.Context;
+using System;
 using System.Collections.Generic;
 using System.Linq;
 
@@ -85,12 +86,35 @@ public List<AuthorDTO> GetAuthors()
             return finalAuthors;
         }
 
-        [Benchmark]
-        public List<AuthorDTO> GetAuthors_Optimized()
+        [Benchmark] 
+        public List<AuthorDTO_Optimized> GetAuthors_Optimized()
         {
-            List<AuthorDTO> authors = new List<AuthorDTO>();
+            var cutOfDate = new DateTime(1900, 1, 1);
+
+            using var dbContext = new AppDbContext();
 
-            return authors;
+            return dbContext.Authors
+                                .Where(x => x.Country == "Serbia" && x.Age == 27)
+                                .OrderByDescending(x => x.BooksCount)
+                                .Take(2)
+                                .Include(x => x.User)
+                                .Include(x => x.Books.Where(xx => xx.Published < cutOfDate))
+                                .AsNoTracking()
+                                .Select(x => new AuthorDTO_Optimized
+                                {
+                                    UserFirstName = x.User.FirstName,
+                                    UserLastName = x.User.LastName,
+                                    UserName = x.User.UserName,
+                                    UserEmail = x.User.Email,
+                                    AuthorAge = x.Age,
+                                    AuthorCountry = x.Country,
+                                    AllBooks = x.Books.Select(y => new BookDto_Optimized
+                                    {
+                                        Name = y.Name,
+                                        PublishedYear = y.Published.Year,
+                                    })
+                                })
+                                .ToList();
         }
     }
 }

BookDto_Optimized.cs

@@ -0,0 +1,8 @@
+namespace OptimizeMePlease
+{
+    public class BookDto_Optimized
+    { 
+        public string Name { get; set; } 
+        public int PublishedYear { get; set; }
+    }
+}

OptimizeMePlease.csproj

@@ -2,16 +2,16 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
+	<TargetFramework>net6.0</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>
     <PackageReference Include="BenchmarkDotNet" Version="0.13.2" />
     <PackageReference Include="Bogus" Version="34.0.2" />
-    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="3.1.29" />
-    <PackageReference Include="Microsoft.EntityFrameworkCore.Relational" Version="3.1.29" />
-    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="3.1.29" />
-    <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="3.1.29">
+    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="6.0.9" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Relational" Version="6.0.9" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="6.0.9" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="6.0.9">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>

Program.cs

@@ -24,13 +24,13 @@ public class Program
         static void Main(string[] args)
         {
             //Debugging 
-            BenchmarkService benchmarkService = new BenchmarkService();
-            benchmarkService.GetAuthors();
+            //BenchmarkService benchmarkService = new BenchmarkService();
+            //benchmarkService.GetAuthors();
 
             //Comment me after first execution, please.
             //IWillPopulateData();
 
-            //BenchmarkRunner.Run<BenchmarkService>();
+            BenchmarkRunner.Run<BenchmarkService>();
         }
 
         public static void IWillPopulateData()