mgravell

What is this

SE.Redis; working on stability+performance work - basically: removing all of "pipelines", "arenas", and a bunch of other things that are a decade of cumulative hacks, to a re-architected implementation designed from first principles with all the good things that didn't exist way back in the never.

Also, adding features and removing tech debt:

• cancellation supported from the outset on both sync+async paths
• zero-alloc routes if you can use a new API (damn you, Task!)

mgravell

using System;
using System.IO;
using System.Linq;

Checkerboard.DrawCheckerboard(Console.Out, 5);
Console.WriteLine();
Checkerboard.DrawCheckerboard(Console.Out, 8);
Console.WriteLine();

static class Checkerboard

mgravell

BenchmarkDotNet v0.14.0, Windows 11 (10.0.26120.1350)
AMD Ryzen 9 7900X, 1 CPU, 24 logical and 12 physical cores
.NET SDK 8.0.203
  [Host]     : .NET 8.0.7 (8.0.724.31311), X64 RyuJIT AVX-512F+CD+BW+DQ+VL+VBMI
  DefaultJob : .NET 8.0.7 (8.0.724.31311), X64 RyuJIT AVX-512F+CD+BW+DQ+VL+VBMI


| Method | Number | Mean      | Error     | StdDev    | Median    |
|------- |------- |----------:|----------:|----------:|----------:|
| Fixed  | 8      | 0.6012 ns | 0.0042 ns | 0.0037 ns | 0.6014 ns |

mgravell

string src = "abc";

foreach (var chunk in src.Find(42))
{
    // woohoo, this compiles!
}

static class MyHelperExtensions
{
    // just exists to make the API available; "notImportant" is *all* of your

mgravell

using BenchmarkDotNet.Attributes;
using BenchmarkDotNet.Jobs;
using BenchmarkDotNet.Running;
using System;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;

BenchmarkRunner.Run<PunBench>();

mgravell

using BenchmarkDotNet.Attributes;
using BenchmarkDotNet.Running;
using System;
using System.Threading.Tasks;

#if DEBUG
var obj = new AsyncMachineryBenchmarks();
// we should have done 100 things (just yields) either way

mgravell

using BenchmarkDotNet.Attributes;
using BenchmarkDotNet.Running;
using System.Buffers;
using System.Text.Json;

// prove impl
var obj = new MyBench { Count = 5 };
obj.Init();
Console.WriteLine(obj.Payload);
Console.WriteLine(string.Join(',', obj.Linq()));

mgravell

using BenchmarkDotNet.Attributes;
using BenchmarkDotNet.Running;
using System.Numerics;

BenchmarkRunner.Run(typeof(ConcatBenchmark).Assembly);

[MemoryDiagnoser]
public class ConcatBenchmark
{
    private readonly int[] arr1 = new[] { 1, 2, 3, 4, 5, 0 },

mgravell

var sb = new StringBuilder("select name from person");
if (!string.IsNullOrWhiteSpace(name))
{
    sb.Append(" where name = @name");
}
var sql = sb.ToString();
foreach (var row in connection.Query<string>(sql, new { name}))
{
    Console.WriteLine(row);
}

mgravell

using System;
using System.Runtime.CompilerServices;

Bar b = CreateBar(42); // invoke a private .ctor
ref int x = ref GetBarX(b); // read field *ref*
Console.WriteLine(x); // deref field value
x = 17; // rewrite a private readonly field
Console.WriteLine(b.A); // 17

[UnsafeAccessor(UnsafeAccessorKind.Constructor)]