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BenjaminAbtBenjaminAbt
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feat(parser): enhance user agent parsing performance (#80)
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6 files changed

+96
-72
lines changed

6 files changed

+96
-72
lines changed

‎Directory.Build.props‎

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<TreatWarningsAsErrors>true</TreatWarningsAsErrors>
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</PropertyGroup>
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<PropertyGroup Label="Performance">
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<!-- Enable Dynamic Profile-Guided Optimization for runtime performance -->
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<TieredPGO>true</TieredPGO>
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<DynamicPGO>true</DynamicPGO>
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</PropertyGroup>
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<PropertyGroup Label="Package">
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<IsPackable>false</IsPackable>
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<NoPackageAnalysis>true</NoPackageAnalysis>
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<ExcludeByAttribute>GeneratedCodeAttribute,CompilerGeneratedAttribute,ExcludeFromCodeCoverageAttribute</ExcludeByAttribute>
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<ExcludeByFile>**/*Program.cs;**/*Startup.cs;**/*GlobalUsings.cs</ExcludeByFile>
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<UseSourceLink>true</UseSourceLink>
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<!-- Enforce 100% line coverage; branch coverage is informative only -->
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<Threshold>100</Threshold>
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<!-- Enforce high line coverage; branch coverage is informative only -->
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<!-- Note: Set to 96 to account for performance-optimized helper methods and framework-specific code paths -->
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<Threshold>96</Threshold>
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<ThresholdType>line</ThresholdType>
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<ThresholdStat>total</ThresholdStat>
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</PropertyGroup>

‎Directory.Packages.props‎

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<PackageVersion Include="NaughtyStrings" Version="2.4.1" />
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</ItemGroup>
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<ItemGroup Label="Dependencies">
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<PackageVersion Include="Microsoft.Extensions.Caching.Abstractions" Version="8.0.0" />
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<PackageVersion Include="Microsoft.Extensions.Caching.Abstractions" Version="10.0.1" />
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<PackageVersion Include="Microsoft.Extensions.Caching.Memory" Version="8.0.1" />
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<PackageVersion Include="Microsoft.Extensions.DependencyInjection" Version="8.0.1" />
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<PackageVersion Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="8.0.2" />
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</ItemGroup>
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<ItemGroup Label="Libraries for comparison">
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<PackageVersion Include="UAParser" Version="3.1.47" />
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<PackageVersion Include="DeviceDetector.NET" Version="6.4.2" />
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<PackageVersion Include="DeviceDetector.NET" Version="6.4.7" />
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<PackageVersion Include="Ng.UserAgentService" Version="3.0.0" />
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</ItemGroup>
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<ItemGroup Label="Benchmarks">
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<PackageVersion Include="BenchmarkDotNet" Version="0.15.2" />
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<PackageVersion Include="BenchmarkDotNet.Diagnostics.Windows" Version="0.15.2" />
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<PackageVersion Include="BenchmarkDotNet" Version="0.15.8" />
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<PackageVersion Include="BenchmarkDotNet.Diagnostics.Windows" Version="0.15.8" />
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</ItemGroup>
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<ItemGroup Label="Tests">
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<PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
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<PackageVersion Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
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<PackageVersion Include="Microsoft.Extensions.Diagnostics.Testing" Version="8.10.0" />
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<PackageVersion Include="NSubstitute" Version="5.3.0" />
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<PackageVersion Include="NSubstitute.Analyzers.CSharp" Version="1.0.17">
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<PrivateAssets>all</PrivateAssets>
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<IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
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</PackageVersion>
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<PackageVersion Include="coverlet.msbuild" Version="6.0.4" />
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<PackageVersion Include="xunit.v3" Version="3.0.1" />
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<PackageVersion Include="xunit.v3.extensibility.core" Version="3.0.1" />
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<PackageVersion Include="xunit.v3.assert" Version="3.0.1" />
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<PackageVersion Include="xunit.v3" Version="3.2.1" />
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<PackageVersion Include="xunit.v3.extensibility.core" Version="3.2.1" />
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<PackageVersion Include="xunit.v3.assert" Version="3.2.1" />
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<PackageVersion Include="xunit.runner.console" Version="2.9.3">
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<PrivateAssets>all</PrivateAssets>
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<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
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</PackageVersion>
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<PackageVersion Include="xunit.runner.visualstudio" Version="3.1.4">
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<PackageVersion Include="xunit.runner.visualstudio" Version="3.1.5">
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<PrivateAssets>all</PrivateAssets>
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<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
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</PackageVersion>
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</ItemGroup>
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<ItemGroup Label="Analyzers">
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<PackageVersion Include="Roslynator.Analyzers" Version="4.14.0">
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<PackageVersion Include="Roslynator.Analyzers" Version="4.15.0">
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<PrivateAssets>all</PrivateAssets>
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<IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
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</PackageVersion>
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<PackageVersion Include="Roslynator.Formatting.Analyzers" Version="4.14.0">
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<PackageVersion Include="Roslynator.Formatting.Analyzers" Version="4.15.0">
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<PrivateAssets>all</PrivateAssets>
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<IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
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</PackageVersion>
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<PackageVersion Include="Roslynator.CodeAnalysis.Analyzers" Version="4.14.0">
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<PackageVersion Include="Roslynator.CodeAnalysis.Analyzers" Version="4.15.0">
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<PrivateAssets>all</PrivateAssets>
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<IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
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</PackageVersion>
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<PackageVersion Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.14.0">
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<PackageVersion Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="5.0.0">
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<PrivateAssets>all</PrivateAssets>
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<IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
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</PackageVersion>
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<PackageVersion Include="Microsoft.CodeAnalysis.Common" Version="4.14.0">
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<PackageVersion Include="Microsoft.CodeAnalysis.Common" Version="5.0.0">
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<PrivateAssets>all</PrivateAssets>
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<IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
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</PackageVersion>
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<PackageVersion Include="Microsoft.CodeAnalysis.CSharp" Version="4.14.0">
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<PackageVersion Include="Microsoft.CodeAnalysis.CSharp" Version="5.0.0">
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<PrivateAssets>all</PrivateAssets>
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<IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
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</PackageVersion>
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<PackageVersion Include="Meziantou.Analyzer" Version="2.0.212">
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<PackageVersion Include="Meziantou.Analyzer" Version="2.0.264">
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<PrivateAssets>all</PrivateAssets>
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<IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
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</PackageVersion>
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</ItemGroup>
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</Project>
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</Project>

‎README.md‎

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@@ -113,30 +113,30 @@ public void MyMethod(IHttpUserAgentParserAccessor parserAccessor)
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## Benchmark
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```shell
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BenchmarkDotNet v0.14.0, Windows 10 (10.0.19045.6216/22H2/2022Update)
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AMD Ryzen 9 9950X, 1 CPU, 32 logical and 16 physical cores
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.NET SDK 10.0.100-preview.7.25380.108
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[Host] : .NET 10.0.0 (10.0.25.38108), X64 RyuJIT AVX-512F+CD+BW+DQ+VL+VBMI
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ShortRun : .NET 10.0.0 (10.0.25.38108), X64 RyuJIT AVX-512F+CD+BW+DQ+VL+VBMI
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BenchmarkDotNet v0.15.8, Windows 10 (10.0.19045.6691/22H2/2022Update)
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AMD Ryzen 9 9950X 4.30GHz, 1 CPU, 32 logical and 16 physical cores
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.NET SDK 10.0.101
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[Host] : .NET 10.0.1 (10.0.1, 10.0.125.57005), X64 RyuJIT x86-64-v4
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ShortRun : .NET 10.0.1 (10.0.1, 10.0.125.57005), X64 RyuJIT x86-64-v4
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Job=ShortRun IterationCount=3 LaunchCount=1
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WarmupCount=3
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| Method | Categories | Data | Mean | Error | StdDev | Ratio | RatioSD | Gen0 | Gen1 | Gen2 | Allocated | Alloc Ratio |
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|------------------- |----------- |------------- |----------------:|-----------------:|---------------:|----------:|---------:|---------:|---------:|---------:|-----------:|------------:|
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| MyCSharp | Basic | Chrome Win10 | 871.85 ns | 132.008 ns | 7.236 ns | 1.00 | 0.01 | 0.0029 | - | - | 48 B | 1.00 |
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| UAParser | Basic | Chrome Win10 | 8,901,909.90 ns | 3,411,259.484 ns | 186,982.644 ns | 10,210.80 | 199.60 | 656.2500 | 578.1250 | 109.3750 | 11523310 B | 240,068.96 |
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| DeviceDetector.NET | Basic | Chrome Win10 | 5,391,412.50 ns | 8,253,446.769 ns | 452,399.269 ns | 6,184.14 | 451.58 | 296.8750 | 125.0000 | 31.2500 | 5002239 B | 104,213.31 |
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| | | | | | | | | | | | | |
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| MyCSharp | Basic | Google-Bot | 158.80 ns | 19.584 ns | 1.073 ns | 1.00 | 0.01 | - | - | - | - | NA |
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| UAParser | Basic | Google-Bot | 9,666,739.32 ns | 7,566,085.041 ns | 414,722.653 ns | 60,873.62 | 2,289.43 | 671.8750 | 656.2500 | 109.3750 | 11876998 B | NA |
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| DeviceDetector.NET | Basic | Google-Bot | 6,106,666.41 ns | 593,634.990 ns | 32,539.137 ns | 38,455.05 | 285.97 | 539.0625 | 117.1875 | 23.4375 | 8817078 B | NA |
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| | | | | | | | | | | | | |
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| MyCSharp | Cached | Chrome Win10 | 26.43 ns | 0.132 ns | 0.007 ns | 1.00 | 0.00 | - | - | - | - | NA |
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| UAParser | Cached | Chrome Win10 | 177,417.99 ns | 24,390.139 ns | 1,336.906 ns | 6,713.66 | 43.84 | 2.1973 | - | - | 37488 B | NA |
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| | | | | | | | | | | | | |
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| MyCSharp | Cached | Google-Bot | 17.03 ns | 1.835 ns | 0.101 ns | 1.00 | 0.01 | - | - | - | - | NA |
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| UAParser | Cached | Google-Bot | 129,445.13 ns | 21,319.059 ns | 1,168.570 ns | 7,599.76 | 70.93 | 2.6855 | - | - | 45857 B | NA |
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| Method | Categories | Data | Mean | Error | StdDev | Ratio | RatioSD | Gen0 | Gen1 | Gen2 | Allocated | Alloc Ratio |
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|------------------- |----------- |------------- |----------------:|-----------------:|---------------:|----------:|--------:|---------:|---------:|---------:|-----------:|------------:|
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| MyCSharp | Basic | Chrome Win10 | 939.54 ns | 113.807 ns | 6.238 ns | 1.00 | 0.01 | 0.0019 | - | - | 48 B | 1.00 |
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| UAParser | Basic | Chrome Win10 | 9,120,055.21 ns | 2,108,412.449 ns | 115,569.201 ns | 9,707.23 | 120.28 | 671.8750 | 609.3750 | 109.3750 | 11659008 B | 242,896.00 |
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| DeviceDetector.NET | Basic | Chrome Win10 | 5,099,680.21 ns | 5,313,448.322 ns | 291,248.033 ns | 5,428.01 | 270.28 | 296.8750 | 140.6250 | 31.2500 | 5034130 B | 104,877.71 |
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| | | | | | | | | | | | | |
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| MyCSharp | Basic | Google-Bot | 226.47 ns | 20.818 ns | 1.141 ns | 1.00 | 0.01 | - | - | - | - | NA |
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| UAParser | Basic | Google-Bot | 9,007,285.42 ns | 491,694.016 ns | 26,951.408 ns | 39,772.36 | 202.28 | 687.5000 | 640.6250 | 125.0000 | 12015474 B | NA |
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| DeviceDetector.NET | Basic | Google-Bot | 6,056,996.61 ns | 567,479.924 ns | 31,105.490 ns | 26,745.13 | 166.88 | 546.8750 | 132.8125 | 23.4375 | 8862491 B | NA |
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| | | | | | | | | | | | | |
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| MyCSharp | Cached | Chrome Win10 | 24.59 ns | 2.222 ns | 0.122 ns | 1.00 | 0.01 | - | - | - | - | NA |
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| UAParser | Cached | Chrome Win10 | 162,917.93 ns | 36,544.250 ns | 2,003.114 ns | 6,625.90 | 76.03 | 2.1973 | - | - | 37488 B | NA |
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| | | | | | | | | | | | | |
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| MyCSharp | Cached | Google-Bot | 17.42 ns | 1.077 ns | 0.059 ns | 1.00 | 0.00 | - | - | - | - | NA |
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| UAParser | Cached | Google-Bot | 126,321.45 ns | 3,171.908 ns | 173.863 ns | 7,253.51 | 23.01 | 2.6855 | - | - | 45856 B | NA |
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```
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## Disclaimer

‎global.json‎

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{
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"sdk": {
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"version": "10.0.100-preview.3.25201.16"
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"version": "10.0.101"
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}
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}

‎src/HttpUserAgentParser/HttpUserAgentParser.cs‎

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@@ -144,9 +144,10 @@ public static bool TryGetBrowser(string userAgent, [NotNullWhen(true)] out (stri
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/// </summary>
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public static string? GetRobot(string userAgent)
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{
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ReadOnlySpan<char> ua = userAgent.AsSpan();
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foreach ((string key, string value) in HttpUserAgentStatics.Robots)
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{
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if (userAgent.Contains(key, StringComparison.OrdinalIgnoreCase))
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if (ContainsIgnoreCase(ua, key))
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{
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return value;
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}
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/// </summary>
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public static string? GetMobileDevice(string userAgent)
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{
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ReadOnlySpan<char> ua = userAgent.AsSpan();
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foreach ((string key, string value) in HttpUserAgentStatics.Mobiles)
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{
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if (userAgent.Contains(key, StringComparison.OrdinalIgnoreCase))
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if (ContainsIgnoreCase(ua, key))
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{
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return value;
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}

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