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Move to .NET 6, Use SQLite, 302 times faster with compiled expressions #21

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nartalex Oct 22, 2022
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nartalex Oct 22, 2022
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2 changes: 2 additions & 0 deletions .gitignore
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Original file line number Diff line number Diff line change
Expand Up @@ -348,3 +348,5 @@ MigrationBackup/

# Ionide (cross platform F# VS Code tools) working folder
.ionide/

*.sqlite
337 changes: 158 additions & 179 deletions BenchmarkService.cs
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@@ -1,187 +1,166 @@
using BenchmarkDotNet.Attributes;
using System;
using System.Collections.Generic;
using System.Linq;
using BenchmarkDotNet.Attributes;
using BenchmarkDotNet.Columns;
using BenchmarkDotNet.Configs;
using BenchmarkDotNet.Reports;
using Microsoft.EntityFrameworkCore;
using OptimizeMePlease.Context;
using System;
using System.Collections.Generic;
using System.Linq;

namespace OptimizeMePlease
{
[MemoryDiagnoser]
[HideColumns(BenchmarkDotNet.Columns.Column.Job, BenchmarkDotNet.Columns.Column.RatioSD, BenchmarkDotNet.Columns.Column.StdDev, BenchmarkDotNet.Columns.Column.AllocRatio)]
//[Config(typeof(Config))]
public class BenchmarkService
{
public BenchmarkService()
{
}

//private class Config : ManualConfig
//{
// public Config()
// {
// SummaryStyle = BenchmarkDotNet.Reports.SummaryStyle.Default.WithRatioStyle(RatioStyle.Trend);
// }
//}

/// <summary>
/// Get top 2 Authors (FirstName, LastName, UserName, Email, Age, Country)
/// from country Serbia aged 27, with the highest BooksCount
/// and all his/her books (Book Name/Title and Publishment Year) published before 1900
/// </summary>
/// <returns></returns>
[Benchmark]
public List<AuthorDTO> GetAuthors()
{
using var dbContext = new AppDbContext();

var authors = dbContext.Authors
.Include(x => x.User)
.ThenInclude(x => x.UserRoles)
.ThenInclude(x => x.Role)
.Include(x => x.Books)
.ThenInclude(x => x.Publisher)
.ToList()
.Select(x => new AuthorDTO
{
UserCreated = x.User.Created,
UserEmailConfirmed = x.User.EmailConfirmed,
UserFirstName = x.User.FirstName,
UserLastActivity = x.User.LastActivity,
UserLastName = x.User.LastName,
UserEmail = x.User.Email,
UserName = x.User.UserName,
UserId = x.User.Id,
RoleId = x.User.UserRoles.FirstOrDefault(y => y.UserId == x.UserId).RoleId,
BooksCount = x.BooksCount,
AllBooks = x.Books.Select(y => new BookDto
{
Id = y.Id,
Name = y.Name,
Published = y.Published,
ISBN = y.ISBN,
PublisherName = y.Publisher.Name
}).ToList(),
AuthorAge = x.Age,
AuthorCountry = x.Country,
AuthorNickName = x.NickName,
Id = x.Id
})
.ToList()
.Where(x => x.AuthorCountry == "Serbia" && x.AuthorAge == 27)
.ToList();

var orderedAuthors = authors.OrderByDescending(x => x.BooksCount).ToList().Take(2).ToList();

List<AuthorDTO> finalAuthors = new List<AuthorDTO>();
foreach (var author in orderedAuthors)
{
List<BookDto> books = new List<BookDto>();

var allBooks = author.AllBooks;

foreach (var book in allBooks)
{
if (book.Published.Year < 1900)
{
book.PublishedYear = book.Published.Year;
books.Add(book);
}
}

author.AllBooks = books;
finalAuthors.Add(author);
}

return finalAuthors;
}

//[Benchmark]
//public List<AuthorDTO_Optimized> GetAuthors_Optimized()
//{
// using var dbContext = new AppDbContext();

// var date = new DateTime(1900, 1, 1);

// return dbContext.Authors
// .IncludeOptimized(x => x.Books.Where(b => b.Published < date))
// .AsNoTracking()
// .Where(x => x.Country == "Serbia" && x.Age == 27)
// .OrderByDescending(x => x.BooksCount)
// .Take(2)
// .Select(x => new AuthorDTO_Optimized
// {
// FirstName = x.User.FirstName,
// LastName = x.User.LastName,
// Email = x.User.Email,
// UserName = x.User.UserName,
// Books = x.Books.Select(y => new BookDTO_Optimized
// {
// Title = y.Name,
// PublishedYear = y.Published.Year
// }),
// Age = x.Age,
// Country = x.Country,
// })
// .ToList();
//}

//[Benchmark]
public List<AuthorDTO_OptimizedStruct> GetAuthors_Optimized_Struct()
{
using var dbContext = new AppDbContext();

var date = new DateTime(1900, 1, 1);

return dbContext.Authors
//.IncludeOptimized(x => x.Books)
.Where(x => x.Country == "Serbia" && x.Age == 27)
.OrderByDescending(x => x.BooksCount)
.Select(x => new AuthorDTO_OptimizedStruct
{
FirstName = x.User.FirstName,
LastName = x.User.LastName,
Email = x.User.Email,
UserName = x.User.UserName,
Books = x.Books.Where(b => b.Published.Year < 1900).Select(y => new BookDTO_OptimizedStruct
{
Title = y.Name,
PublishedYear = y.Published.Year
}),
Age = x.Age,
Country = x.Country,
})
.Take(2)
.ToList();
}

//[Benchmark]
public List<AuthorDTO_OptimizedStruct> GetAuthors_Optimized_Struct1()
{
using var dbContext = new AppDbContext();

return dbContext.Authors
.Where(x => x.Country == "Serbia" && x.Age == 27 && x.Books.Any(y => y.Published.Year < 1900))
//.IncludeOptimized(x => x.Books.Where(y => y.Published.Year < 1900))
.OrderByDescending(x => x.BooksCount)
.Select(x => new AuthorDTO_OptimizedStruct
{
FirstName = x.User.FirstName,
LastName = x.User.LastName,
Email = x.User.Email,
UserName = x.User.UserName,
Books = x.Books.Select(y => new BookDTO_OptimizedStruct
{
Title = y.Name,
PublishedYear = y.Published.Year
}),
Age = x.Age,
Country = x.Country,
})
.Take(2)
.ToList();
}
}
[MemoryDiagnoser]
[HideColumns(Column.Job, Column.RatioSD, Column.StdDev, Column.AllocRatio)]
[Config(typeof(Config))]
public class BenchmarkService
{
private class Config : ManualConfig
{
public Config()
{
SummaryStyle = SummaryStyle.Default.WithRatioStyle(RatioStyle.Trend);
}
}

private AppDbContext dbContext;

[GlobalSetup]
public void GlobalSetup()
{
dbContext = new AppDbContext();
}

[GlobalCleanup]
public void GlobalCleanup()
{
dbContext.Dispose();
}

/// <summary>
/// Get top 2 Authors (FirstName, LastName, UserName, Email, Age, Country)
/// from country Serbia aged 27, with the highest BooksCount
/// and all his/her books (Book Name/Title and Publishment Year) published before 1900
/// </summary>
[Benchmark(Baseline = true)]
public List<AuthorDTO> GetAuthors()
{
var authors = dbContext.Authors
.Include(x => x.User)
.ThenInclude(x => x.UserRoles)
.ThenInclude(x => x.Role)
.Include(x => x.Books)
.ThenInclude(x => x.Publisher)
.ToList()
.Select(x => new AuthorDTO
{
UserCreated = x.User.Created,
UserEmailConfirmed = x.User.EmailConfirmed,
UserFirstName = x.User.FirstName,
UserLastActivity = x.User.LastActivity,
UserLastName = x.User.LastName,
UserEmail = x.User.Email,
UserName = x.User.UserName,
UserId = x.User.Id,
RoleId = x.User.UserRoles.FirstOrDefault(y => y.UserId == x.UserId).RoleId,
BooksCount = x.BooksCount,
AllBooks = x.Books.Select(y => new BookDto
{
Id = y.Id,
Name = y.Name,
Published = y.Published,
ISBN = y.ISBN,
PublisherName = y.Publisher.Name
}).ToList(),
AuthorAge = x.Age,
AuthorCountry = x.Country,
AuthorNickName = x.NickName,
Id = x.Id
})
.ToList()
.Where(x => x.AuthorCountry == "Serbia" && x.AuthorAge == 27)
.ToList();

var orderedAuthors = authors.OrderByDescending(x => x.BooksCount).ToList().Take(2).ToList();

List<AuthorDTO> finalAuthors = new List<AuthorDTO>();
foreach (var author in orderedAuthors)
{
List<BookDto> books = new List<BookDto>();

var allBooks = author.AllBooks;

foreach (var book in allBooks)
{
if (book.Published.Year < 1900)
{
book.PublishedYear = book.Published.Year;
books.Add(book);
}
}

author.AllBooks = books;
finalAuthors.Add(author);
}

return finalAuthors;
}

[Benchmark]
public List<AuthorDTO> GetAuthorsOptimized()
{
var authors = dbContext.Authors
.Include(author => author.User)
.Include(author => author.Books.Where(book => book.Published.Year < 1900))
.Where(author => author.Country == "Serbia" && author.Age == 27)
.OrderByDescending(author => author.BooksCount)
.Select(author => new AuthorDTO
{
UserFirstName = author.User.FirstName,
UserLastName = author.User.LastName,
UserEmail = author.User.Email,
UserName = author.User.UserName,
AuthorAge = author.Age,
AuthorCountry = author.Country,
AllBooks = author.Books.Select(book => new BookDto
{
Name = book.Name,
Published = book.Published
}).ToList(),
})
.Take(2)
.ToList();

return authors;
}

private static readonly Func<AppDbContext, IEnumerable<AuthorDTO>> CompiledQuery = EF.CompileQuery(
(AppDbContext context) => context.Authors
.Include(author => author.User)
.Include(author => author.Books.Where(book => book.Published.Year < 1900))
.Where(author => author.Country == "Serbia" && author.Age == 27)
.OrderByDescending(author => author.BooksCount)
.Select(author => new AuthorDTO
{
UserFirstName = author.User.FirstName,
UserLastName = author.User.LastName,
UserEmail = author.User.Email,
UserName = author.User.UserName,
AuthorAge = author.Age,
AuthorCountry = author.Country,
AllBooks = author.Books.Select(book => new BookDto
{
Name = book.Name,
Published = book.Published
}).ToList(),
})
.Take(2));

[Benchmark]
public List<AuthorDTO> GetAuthorsOptimized_CompiledExpressions()
{
var authors = CompiledQuery(dbContext).ToList();
return authors;
}
}
}
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