Add CacheKeyBaseline and results

Author: ronaldbarendse

tests/ImageSharp.Web.Benchmarks/Caching/CacheKeyBaseline.cs

@@ -0,0 +1,38 @@
+// Copyright (c) Six Labors.
+// Licensed under the Apache License, Version 2.0.
+
+using System.Text;
+using Microsoft.AspNetCore.Http;
+using SixLabors.ImageSharp.Web.Caching;
+using SixLabors.ImageSharp.Web.Commands;
+
+namespace SixLabors.ImageSharp.Web.Benchmarks.Caching
+{
+    /// <summary>
+    /// Original implementation of cache key creation.
+    /// </summary>
+    public class CacheKeyBaseline : ICacheKey
+    {
+        /// <inheritdoc/>
+        public string Create(HttpContext context, CommandCollection commands)
+        {
+            var sb = new StringBuilder(context.Request.Host.ToString());
+
+            string pathBase = context.Request.PathBase.ToString();
+            if (!string.IsNullOrWhiteSpace(pathBase))
+            {
+                sb.AppendFormat("{0}/", pathBase);
+            }
+
+            string path = context.Request.Path.ToString();
+            if (!string.IsNullOrWhiteSpace(path))
+            {
+                sb.Append(path);
+            }
+
+            sb.Append(QueryString.Create(commands));
+
+            return sb.ToString().ToLowerInvariant();
+        }
+    }
+}

tests/ImageSharp.Web.Benchmarks/Caching/CacheKeyBenchmarks.cs

@@ -18,15 +18,34 @@ public class CacheKeyBenchmarks
             { "width", "400" }
         };
 
+        private static readonly ICacheKey CacheKeyBaseline = new CacheKeyBaseline();
         private static readonly ICacheKey UriRelativeCacheKey = new UriRelativeCacheKey();
         private static readonly ICacheKey UriAbsoluteCacheKey = new UriAbsoluteCacheKey();
 
-        [Benchmark(Baseline = true, Description = "UriRelativeCacheKey")]
+        [Benchmark(Baseline = true, Description = "Baseline")]
+        public string CreateUsingBaseline() => CacheKeyBaseline.Create(Context, Commands);
+
+        [Benchmark(Description = "UriRelativeCacheKey")]
         public string CreateUsingUriRelativeCacheKey() => UriRelativeCacheKey.Create(Context, Commands);
 
         [Benchmark(Description = "UriAbsoluteCacheKey")]
         public string CreateUsingUriAbsoluteCacheKey() => UriAbsoluteCacheKey.Create(Context, Commands);
 
+        /*
+        BenchmarkDotNet=v0.13.1, OS=Windows 10.0.22000
+        Intel Core i7-10750H CPU 2.60GHz, 1 CPU, 12 logical and 6 physical cores
+        .NET SDK=6.0.101
+          [Host]     : .NET Core 3.1.22 (CoreCLR 4.700.21.56803, CoreFX 4.700.21.57101), X64 RyuJIT
+          DefaultJob : .NET Core 3.1.22 (CoreCLR 4.700.21.56803, CoreFX 4.700.21.57101), X64 RyuJIT
+
+
+        |              Method |     Mean |   Error |  StdDev | Ratio | RatioSD |  Gen 0 | Allocated |
+        |-------------------- |---------:|--------:|--------:|------:|--------:|-------:|----------:|
+        |            Baseline | 497.4 ns | 8.26 ns | 7.33 ns |  1.00 |    0.00 | 0.1106 |     696 B |
+        | UriRelativeCacheKey | 270.9 ns | 5.47 ns | 7.11 ns |  0.55 |    0.02 | 0.0587 |     368 B |
+        | UriAbsoluteCacheKey | 447.4 ns | 3.38 ns | 3.16 ns |  0.90 |    0.01 | 0.0939 |     592 B |
+        */
+
         private static HttpContext CreateContext()
         {
             var httpContext = new DefaultHttpContext();