[Config registry] aliases handling

[anna-git]

As part of Config inversion third step, this is part of stack:
Add gitlab step and json configuration file > #7548
Cleanup config keys constants, check them against local json file > #7556
Aliases handling > #7565
Analyzers to guard platform and configurationbuilder > #7575

Summary of changes

• Created ConfigKeyAliasesSwitcher source generator to automatically generate alias mappings from supported-configurations.json
• Refactored ConfigurationBuilder to automatically handle aliases using the generated switcher, removing explicit fallback key parameters
• Restored WithIntegrationKey, WithIntegrationAnalyticsKey, and WithIntegrationAnalyticsSampleRateKey helper methods for integration-specific configuration
• Removed explicit fallback keys from all WithKeys() call sites throughout the codebase
• Updated configuration tests to work with automatic alias resolution
• Fixed special cases for DatadogLoggingFactory to handle deprecated keys properly

Reason for change

This PR centralizes alias handling by auto-generating the alias mappings from the JSON file.

Implementation details

ConfigKeyAliasesSwitcher source generator:

• Reads supported-configurations.json at compile time
• Generates a static GetAliases(string key) method that returns aliases for any configuration key
• Generated code example:

internal static partial class ConfigKeyAliasesSwitcher
{
    public static string[] GetAliases(string key) => key switch
    {
        "DD_TRACE_AGENT_PORT" => new[] { "DATADOG_TRACE_AGENT_PORT" },
        "DD_AGENT_HOST" => new[] { "DD_TRACE_AGENT_HOSTNAME", "DATADOG_TRACE_AGENT_HOSTNAME_OPTIMIZED" },
        "DD_TRACE_LOG_DIRECTORY" => new[] { "DD_TRACE_LOG_PATH" },
        "DD_TRACE_CLIENT_IP_HEADER" => new[] { "DD_APPSEC_IPHEADER" },
        "DD_TRACE_PROPAGATION_STYLE_INJECT" => new[] { "DD_PROPAGATION_STYLE_INJECT", "DD_TRACE_PROPAGATION_STYLE" },
        "DD_TRACE_PROPAGATION_STYLE_EXTRACT" => new[] { "DD_PROPAGATION_STYLE_EXTRACT", "DD_TRACE_PROPAGATION_STYLE" },
        _ => Array.Empty<string>()
    };
}

ConfigurationBuilder refactoring:

// BEFORE: Manual fallback keys
public HasKeys WithKeys(string key, string fallbackKey1 = null, string fallbackKey2 = null, string fallbackKey3 = null)

// AFTER: Automatic alias resolution
public HasKeys WithKeys(string key) => new(_source, _telemetry, key);

private ConfigurationResult<T> GetResultWithFallback<T>(Func<string, ConfigurationResult<T>> selector)
{
    var result = selector(Key);
    if (!result.ShouldFallBack)
    {
        return result;
    }

    // Automatically get aliases from generated switcher
    string[] aliases = ConfigKeyAliasesSwitcher.GetAliases(Key);
    
    foreach (var alias in aliases)
    {
        result = selector(alias);
        if (!result.ShouldFallBack)
        {
            break;
        }
    }
    
    return result;
}

Integration-specific helper methods restored:

public HasKeys WithIntegrationKey(string integrationName) => new(
    _source,
    _telemetry,
    string.Format(IntegrationSettings.IntegrationEnabledKey, integrationName.ToUpperInvariant()),
    [
        string.Format(IntegrationSettings.IntegrationEnabledKey, integrationName),
        $"DD_{integrationName}_ENABLED"
    ]);

public HasKeys WithIntegrationAnalyticsKey(string integrationName) => new(...);
public HasKeys WithIntegrationAnalyticsSampleRateKey(string integrationName) => new(...);

These handle the special case where integration keys follow a pattern (e.g., DD_TRACE_{INTEGRATION}_ENABLED) and need dynamic alias generation.

Simplified call sites:

// BEFORE: Explicit fallbacks
config.WithKeys(ConfigurationKeys.PropagationStyleInject, 
                "DD_PROPAGATION_STYLE_INJECT", 
                ConfigurationKeys.PropagationStyle)

// AFTER: Automatic aliases
config.WithKeys(ConfigurationKeys.PropagationStyleInject)

Special handling for deprecated keys:
For DatadogLoggingFactory, deprecated keys like DD_TRACE_LOG_PATH need special handling (extracting directory from file path). This is handled by checking the deprecated key explicitly when the primary key is not found.

Test coverage

• Updated all configuration tests to work with automatic alias resolution
• Tests verify that aliases are correctly resolved in the expected order
• Integration tests ensure backward compatibility with deprecated keys
• Source generator tests validate correct generation from JSON file

Other details

Benefits:

• Single source of truth: Aliases defined once in supported-configurations.json
• Automatic synchronization: Changes to JSON automatically reflected in code
• Cleaner code: No more explicit fallback parameters at call sites
• Type-safe: Generated code is strongly-typed and compile-time checked
• Maintainable: Adding/removing aliases only requires JSON changes
• Consistent: All code uses the same alias resolution logic

Performance:

• Alias lookup is a simple switch statement (O(1) with compiler optimizations)
• No runtime reflection or dynamic lookups
• Generated code is inlined by JIT compiler

Example alias resolution:

// User sets: DD_PROPAGATION_STYLE_INJECT=datadog
// 1. Try DD_TRACE_PROPAGATION_STYLE_INJECT (primary key) → not found
// 2. Try DD_PROPAGATION_STYLE_INJECT (alias 1) → found! Use this value
// 3. Try DD_TRACE_PROPAGATION_STYLE (alias 2) → not checked, already found

Future improvements:

• Could extend source generator to validate alias consistency
• Could generate documentation from aliases
• Could add analyzer to warn about hardcoded alias strings

This PR builds on #7556 (validation) and simplifies the configuration system by automating alias handling through source generation.

[dd-trace-dotnet-ci-bot]

Execution-Time Benchmarks Report ⏱️

Execution-time results for samples comparing the following branches/commits:

• This PR (7565)
• master

Execution-time benchmarks measure the whole time it takes to execute a program. And are intended to measure the one-off costs. Cases where the execution time results for the PR are worse than latest master results are shown in red. The following thresholds were used for comparing the execution times:

• Welch test with statistical test for significance of 5%
• Only results indicating a difference greater than 5% and 5 ms are considered.

Note that these results are based on a single point-in-time result for each branch. For full results, see the dashboard.

Graphs show the p99 interval based on the mean and StdDev of the test run, as well as the mean value of the run (shown as a diamond below the graph).

gantt
    title Execution time (ms) FakeDbCommand (.NET Framework 4.8) 
    dateFormat  X
    axisFormat %s
    todayMarker off
    section Bailout
    This PR (7565) - mean (72ms)  : 71, 73
     .   : milestone, 72,
    master - mean (72ms)  : 71, 73
     .   : milestone, 72,

    section Baseline
    This PR (7565) - mean (68ms)  : 67, 69
     .   : milestone, 68,
    master - mean (68ms)  : 66, 71
     .   : milestone, 68,

    section CallTarget+Inlining+NGEN
    This PR (7565) - mean (1,060ms)  : 1016, 1105
     .   : milestone, 1060,
    master - mean (1,053ms)  : 1004, 1101
     .   : milestone, 1053,

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gantt
    title Execution time (ms) FakeDbCommand (.NET Core 3.1) 
    dateFormat  X
    axisFormat %s
    todayMarker off
    section Bailout
    This PR (7565) - mean (106ms)  : 105, 108
     .   : milestone, 106,
    master - mean (106ms)  : 105, 108
     .   : milestone, 106,

    section Baseline
    This PR (7565) - mean (106ms)  : 103, 109
     .   : milestone, 106,
    master - mean (106ms)  : 103, 108
     .   : milestone, 106,

    section CallTarget+Inlining+NGEN
    This PR (7565) - mean (747ms)  : 726, 768
     .   : milestone, 747,
    master - mean (743ms)  : 718, 768
     .   : milestone, 743,

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gantt
    title Execution time (ms) FakeDbCommand (.NET 6) 
    dateFormat  X
    axisFormat %s
    todayMarker off
    section Bailout
    This PR (7565) - mean (100ms)  : 99, 101
     .   : milestone, 100,
    master - mean (101ms)  : 100, 101
     .   : milestone, 101,

    section Baseline
    This PR (7565) - mean (100ms)  : 97, 102
     .   : milestone, 100,
    master - mean (100ms)  : 97, 102
     .   : milestone, 100,

    section CallTarget+Inlining+NGEN
    This PR (7565) - mean (784ms)  : 749, 819
     .   : milestone, 784,
    master - mean (774ms)  : 721, 828
     .   : milestone, 774,

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gantt
    title Execution time (ms) FakeDbCommand (.NET 8) 
    dateFormat  X
    axisFormat %s
    todayMarker off
    section Bailout
    This PR (7565) - mean (93ms)  : 91, 94
     .   : milestone, 93,
    master - mean (92ms)  : 91, 94
     .   : milestone, 92,

    section Baseline
    This PR (7565) - mean (92ms)  : 90, 93
     .   : milestone, 92,
    master - mean (92ms)  : 90, 94
     .   : milestone, 92,

    section CallTarget+Inlining+NGEN
    This PR (7565) - mean (662ms)  : 647, 677
     .   : milestone, 662,
    master - mean (662ms)  : 648, 676
     .   : milestone, 662,

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gantt
    title Execution time (ms) HttpMessageHandler (.NET Framework 4.8) 
    dateFormat  X
    axisFormat %s
    todayMarker off
    section Bailout
    This PR (7565) - mean (210ms)  : crit, 202, 217
     .   : crit, milestone, 210,
    master - mean (196ms)  : 193, 199
     .   : milestone, 196,

    section Baseline
    This PR (7565) - mean (205ms)  : 198, 213
     .   : milestone, 205,
    master - mean (192ms)  : 189, 195
     .   : milestone, 192,

    section CallTarget+Inlining+NGEN
    This PR (7565) - mean (1,220ms)  : 1148, 1292
     .   : milestone, 1220,
    master - mean (1,163ms)  : 1106, 1221
     .   : milestone, 1163,

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gantt
    title Execution time (ms) HttpMessageHandler (.NET Core 3.1) 
    dateFormat  X
    axisFormat %s
    todayMarker off
    section Bailout
    This PR (7565) - mean (292ms)  : 285, 300
     .   : milestone, 292,
    master - mean (278ms)  : 273, 283
     .   : milestone, 278,

    section Baseline
    This PR (7565) - mean (288ms)  : 283, 293
     .   : milestone, 288,
    master - mean (277ms)  : 271, 282
     .   : milestone, 277,

    section CallTarget+Inlining+NGEN
    This PR (7565) - mean (968ms)  : 921, 1015
     .   : milestone, 968,
    master - mean (935ms)  : 888, 981
     .   : milestone, 935,

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gantt
    title Execution time (ms) HttpMessageHandler (.NET 6) 
    dateFormat  X
    axisFormat %s
    todayMarker off
    section Bailout
    This PR (7565) - mean (294ms)  : 286, 303
     .   : milestone, 294,
    master - mean (281ms)  : 276, 285
     .   : milestone, 281,

    section Baseline
    This PR (7565) - mean (293ms)  : 287, 300
     .   : milestone, 293,
    master - mean (280ms)  : 274, 286
     .   : milestone, 280,

    section CallTarget+Inlining+NGEN
    This PR (7565) - mean (1,038ms)  : 994, 1082
     .   : milestone, 1038,
    master - mean (987ms)  : 941, 1034
     .   : milestone, 987,

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gantt
    title Execution time (ms) HttpMessageHandler (.NET 8) 
    dateFormat  X
    axisFormat %s
    todayMarker off
    section Bailout
    This PR (7565) - mean (284ms)  : crit, 277, 290
     .   : crit, milestone, 284,
    master - mean (268ms)  : 265, 272
     .   : milestone, 268,

    section Baseline
    This PR (7565) - mean (283ms)  : 277, 289
     .   : milestone, 283,
    master - mean (268ms)  : 265, 272
     .   : milestone, 268,

    section CallTarget+Inlining+NGEN
    This PR (7565) - mean (888ms)  : 858, 919
     .   : milestone, 888,
    master - mean (850ms)  : 832, 869
     .   : milestone, 850,

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[pr-commenter]

Benchmarks

Benchmarks Report for benchmark platform 🐌

Benchmarks for #7565 compared to master:

• 4 benchmarks are faster, with geometric mean 1.210
• 7 benchmarks are slower, with geometric mean 1.339
• 3 benchmarks have fewer allocations
• 15 benchmarks have more allocations

The following thresholds were used for comparing the benchmark speeds:

• Mann–Whitney U test with statistical test for significance of 5%
• Only results indicating a difference greater than 10% and 0.3 ns are considered.

Allocation changes below 0.5% are ignored.

Benchmark details

Benchmarks.Trace.ActivityBenchmark - Same speed ✔️ Fewer allocations 🎉

Fewer allocations 🎉 in #7565

Benchmark	Base Allocated	Diff Allocated	Change	Change %
Benchmarks.Trace.ActivityBenchmark.StartStopWithChild‑net472	6.11 KB	6.03 KB	-77 B	-1.26%

Raw results

Branch	Method	Toolchain	Mean	StdError	StdDev	Gen 0	Gen 1	Gen 2	Allocated
master	StartStopWithChild	net6.0	10.5μs	58.5ns	361ns	0	0	0	5.51 KB
master	StartStopWithChild	netcoreapp3.1	14μs	70.9ns	333ns	0	0	0	5.69 KB
master	StartStopWithChild	net472	22.1μs	119ns	676ns	0.952	0.212	0	6.11 KB
#7565	StartStopWithChild	net6.0	10.4μs	58.6ns	397ns	0	0	0	5.52 KB
#7565	StartStopWithChild	netcoreapp3.1	13.8μs	65.6ns	278ns	0	0	0	5.68 KB
#7565	StartStopWithChild	net472	21.6μs	114ns	614ns	0.871	0.218	0	6.03 KB

Benchmarks.Trace.AgentWriterBenchmark - Same speed ✔️ More allocations ⚠️

More allocations ⚠️ in #7565

Benchmark	Base Allocated	Diff Allocated	Change	Change %
Benchmarks.Trace.AgentWriterBenchmark.WriteAndFlushEnrichedTraces‑net472	3.31 KB	3.35 KB	46 B	1.39%

Raw results

Branch	Method	Toolchain	Mean	StdError	StdDev	Gen 0	Gen 1	Gen 2	Allocated
master	WriteAndFlushEnrichedTraces	net6.0	927μs	173ns	624ns	0	0	0	2.7 KB
master	WriteAndFlushEnrichedTraces	netcoreapp3.1	1.05ms	599ns	2.32μs	0	0	0	2.7 KB
master	WriteAndFlushEnrichedTraces	net472	1.18ms	71.7ns	268ns	0	0	0	3.31 KB
#7565	WriteAndFlushEnrichedTraces	net6.0	918μs	193ns	722ns	0	0	0	2.71 KB
#7565	WriteAndFlushEnrichedTraces	netcoreapp3.1	1.04ms	72ns	249ns	0	0	0	2.7 KB
#7565	WriteAndFlushEnrichedTraces	net472	1.24ms	186ns	718ns	0	0	0	3.35 KB

Benchmarks.Trace.Asm.AppSecBodyBenchmark - Slower ⚠️ More allocations ⚠️

Slower ⚠️ in #7565

Benchmark	diff/base	Base Median (ns)	Diff Median (ns)	Modality
Benchmarks.Trace.Asm.AppSecBodyBenchmark.AllCycleMoreComplexBody‑net6.0	1.243	353,006.25	438,702.31
Benchmarks.Trace.Asm.AppSecBodyBenchmark.AllCycleSimpleBody‑net6.0	1.238	346,702.55	429,329.02
Benchmarks.Trace.Asm.AppSecBodyBenchmark.AllCycleSimpleBody‑netcoreapp3.1	1.237	506,944.43	627,228.93
Benchmarks.Trace.Asm.AppSecBodyBenchmark.AllCycleSimpleBody‑net472	1.201	462,276.12	555,174.18
Benchmarks.Trace.Asm.AppSecBodyBenchmark.AllCycleMoreComplexBody‑net472	1.196	471,800.69	564,246.74
Benchmarks.Trace.Asm.AppSecBodyBenchmark.AllCycleMoreComplexBody‑netcoreapp3.1	1.168	504,606.52	589,575.72

More allocations ⚠️ in #7565

Benchmark	Base Allocated	Diff Allocated	Change	Change %
Benchmarks.Trace.Asm.AppSecBodyBenchmark.AllCycleSimpleBody‑net6.0	178.25 KB	295.07 KB	116.82 KB	65.53%
Benchmarks.Trace.Asm.AppSecBodyBenchmark.AllCycleMoreComplexBody‑net6.0	181.77 KB	298.59 KB	116.81 KB	64.26%
Benchmarks.Trace.Asm.AppSecBodyBenchmark.AllCycleSimpleBody‑netcoreapp3.1	184.01 KB	300.82 KB	116.82 KB	63.48%
Benchmarks.Trace.Asm.AppSecBodyBenchmark.AllCycleMoreComplexBody‑netcoreapp3.1	187.44 KB	304.26 KB	116.82 KB	62.32%
Benchmarks.Trace.Asm.AppSecBodyBenchmark.AllCycleSimpleBody‑net472	203.96 KB	322.21 KB	118.25 KB	57.98%
Benchmarks.Trace.Asm.AppSecBodyBenchmark.AllCycleMoreComplexBody‑net472	207.5 KB	325.73 KB	118.23 KB	56.98%

Raw results

Branch	Method	Toolchain	Mean	StdError	StdDev	Gen 0	Gen 1	Gen 2	Allocated
master	AllCycleSimpleBody	net6.0	345μs	1.64μs	6.75μs	0	0	0	178.25 KB
master	AllCycleSimpleBody	netcoreapp3.1	505μs	1.46μs	5.66μs	0	0	0	184.01 KB
master	AllCycleSimpleBody	net472	462μs	84ns	314ns	31.2	0	0	203.96 KB
master	AllCycleMoreComplexBody	net6.0	353μs	1.01μs	3.76μs	0	0	0	181.77 KB
master	AllCycleMoreComplexBody	netcoreapp3.1	502μs	1.71μs	6.61μs	0	0	0	187.44 KB
master	AllCycleMoreComplexBody	net472	472μs	97.3ns	351ns	32.4	0	0	207.5 KB
master	ObjectExtractorSimpleBody	net6.0	325ns	0.203ns	0.784ns	0	0	0	280 B
master	ObjectExtractorSimpleBody	netcoreapp3.1	388ns	2.21ns	15.2ns	0	0	0	272 B
master	ObjectExtractorSimpleBody	net472	308ns	0.0144ns	0.05ns	0.0445	0	0	281 B
master	ObjectExtractorMoreComplexBody	net6.0	6.39μs	31.1ns	136ns	0	0	0	3.78 KB
master	ObjectExtractorMoreComplexBody	netcoreapp3.1	7.77μs	35.6ns	138ns	0	0	0	3.69 KB
master	ObjectExtractorMoreComplexBody	net472	6.75μs	1.81ns	6.79ns	0.573	0	0	3.8 KB
#7565	AllCycleSimpleBody	net6.0	426μs	2.26μs	11.3μs	0	0	0	295.07 KB
#7565	AllCycleSimpleBody	netcoreapp3.1	624μs	2.95μs	11.4μs	0	0	0	300.82 KB
#7565	AllCycleSimpleBody	net472	555μs	123ns	462ns	48.9	2.72	0	322.21 KB
#7565	AllCycleMoreComplexBody	net6.0	434μs	2.36μs	12.9μs	0	0	0	298.59 KB
#7565	AllCycleMoreComplexBody	netcoreapp3.1	584μs	2.78μs	11.5μs	0	0	0	304.26 KB
#7565	AllCycleMoreComplexBody	net472	565μs	282ns	1.06μs	51.6	2.72	0	325.73 KB
#7565	ObjectExtractorSimpleBody	net6.0	313ns	1.79ns	12.4ns	0	0	0	280 B
#7565	ObjectExtractorSimpleBody	netcoreapp3.1	397ns	2.17ns	12.8ns	0	0	0	272 B
#7565	ObjectExtractorSimpleBody	net472	300ns	0.065ns	0.234ns	0.0438	0	0	281 B
#7565	ObjectExtractorMoreComplexBody	net6.0	6.34μs	29.5ns	122ns	0	0	0	3.78 KB
#7565	ObjectExtractorMoreComplexBody	netcoreapp3.1	7.69μs	33.9ns	131ns	0	0	0	3.69 KB
#7565	ObjectExtractorMoreComplexBody	net472	6.7μs	4.27ns	16.5ns	0.601	0	0	3.8 KB

Benchmarks.Trace.Asm.AppSecEncoderBenchmark - Same speed ✔️ Same allocations ✔️

Raw results

Branch	Method	Toolchain	Mean	StdError	StdDev	Gen 0	Gen 1	Gen 2	Allocated
master	EncodeArgs	net6.0	78.7μs	87.4ns	327ns	0	0	0	32.4 KB
master	EncodeArgs	netcoreapp3.1	98.3μs	231ns	896ns	0	0	0	32.4 KB
master	EncodeArgs	net472	109μs	13.2ns	49.4ns	4.9	0	0	32.51 KB
master	EncodeLegacyArgs	net6.0	147μs	193ns	749ns	0	0	0	2.15 KB
master	EncodeLegacyArgs	netcoreapp3.1	198μs	183ns	709ns	0	0	0	2.14 KB
master	EncodeLegacyArgs	net472	265μs	109ns	423ns	0	0	0	2.16 KB
#7565	EncodeArgs	net6.0	76.4μs	372ns	1.39μs	0	0	0	32.4 KB
#7565	EncodeArgs	netcoreapp3.1	97.5μs	235ns	910ns	0	0	0	32.4 KB
#7565	EncodeArgs	net472	109μs	12.1ns	46.7ns	4.91	0	0	32.51 KB
#7565	EncodeLegacyArgs	net6.0	148μs	11.1ns	40ns	0	0	0	2.15 KB
#7565	EncodeLegacyArgs	netcoreapp3.1	202μs	340ns	1.32μs	0	0	0	2.14 KB
#7565	EncodeLegacyArgs	net472	263μs	20.8ns	80.6ns	0	0	0	2.17 KB

Benchmarks.Trace.Asm.AppSecWafBenchmark - Slower ⚠️ Same allocations ✔️

Slower ⚠️ in #7565

Benchmark	diff/base	Base Median (ns)	Diff Median (ns)	Modality
Benchmarks.Trace.Asm.AppSecWafBenchmark.RunWafRealisticBenchmarkWithAttack‑netcoreapp3.1	2.414	297,810.98	718,955.96

Faster 🎉 in #7565

Benchmark	base/diff	Base Median (ns)	Diff Median (ns)	Modality
Benchmarks.Trace.Asm.AppSecWafBenchmark.RunWafRealisticBenchmark‑netcoreapp3.1	1.404	874,284.38	622,717.34

Raw results

Branch	Method	Toolchain	Mean	StdError	StdDev	Gen 0	Gen 1	Gen 2	Allocated
master	RunWafRealisticBenchmark	net6.0	409μs	147ns	510ns	0	0	0	4.55 KB
master	RunWafRealisticBenchmark	netcoreapp3.1	819μs	11.4μs	113μs	0	0	0	4.48 KB
master	RunWafRealisticBenchmark	net472	434μs	80.3ns	311ns	0	0	0	4.68 KB
master	RunWafRealisticBenchmarkWithAttack	net6.0	296μs	62.9ns	244ns	0	0	0	2.24 KB
master	RunWafRealisticBenchmarkWithAttack	netcoreapp3.1	298μs	224ns	866ns	0	0	0	2.22 KB
master	RunWafRealisticBenchmarkWithAttack	net472	312μs	56.3ns	218ns	0	0	0	2.29 KB
#7565	RunWafRealisticBenchmark	net6.0	397μs	283ns	1.1μs	0	0	0	4.55 KB
#7565	RunWafRealisticBenchmark	netcoreapp3.1	592μs	8.19μs	73.7μs	0	0	0	4.48 KB
#7565	RunWafRealisticBenchmark	net472	429μs	44.1ns	165ns	0	0	0	4.66 KB
#7565	RunWafRealisticBenchmarkWithAttack	net6.0	287μs	45.1ns	175ns	0	0	0	2.24 KB
#7565	RunWafRealisticBenchmarkWithAttack	netcoreapp3.1	677μs	12.7μs	124μs	0	0	0	2.22 KB
#7565	RunWafRealisticBenchmarkWithAttack	net472	309μs	33.3ns	129ns	0	0	0	2.29 KB

Benchmarks.Trace.AspNetCoreBenchmark - Same speed ✔️ Same allocations ✔️

Raw results

Branch	Method	Toolchain	Mean	StdError	StdDev	Gen 0	Gen 1	Gen 2	Allocated
master	SendRequest	net6.0	62μs	56.9ns	220ns	0	0	0	14.52 KB
master	SendRequest	netcoreapp3.1	72.8μs	106ns	381ns	0	0	0	17.42 KB
master	SendRequest	net472	0.00389ns	0.0018ns	0.00698ns	0	0	0	0 b
#7565	SendRequest	net6.0	61.9μs	49.3ns	184ns	0	0	0	14.52 KB
#7565	SendRequest	netcoreapp3.1	71.3μs	167ns	627ns	0	0	0	17.42 KB
#7565	SendRequest	net472	0.00256ns	0.00107ns	0.00402ns	0	0	0	0 b

Benchmarks.Trace.CharSliceBenchmark - Faster 🎉 More allocations ⚠️

Faster 🎉 in #7565

Benchmark	base/diff	Base Median (ns)	Diff Median (ns)	Modality
Benchmarks.Trace.CharSliceBenchmark.OptimizedCharSlice‑net6.0	1.139	1,512,556.25	1,327,905.21

More allocations ⚠️ in #7565

Benchmark	Base Allocated	Diff Allocated	Change	Change %
Benchmarks.Trace.CharSliceBenchmark.OptimizedCharSlice‑net472	0 b	73 B	73 B	∞
Benchmarks.Trace.CharSliceBenchmark.OptimizedCharSliceWithPool‑netcoreapp3.1	0 b	1 B	1 B	∞
Benchmarks.Trace.CharSliceBenchmark.OptimizedCharSliceWithPool‑net472	0 b	47 B	47 B	∞
Benchmarks.Trace.CharSliceBenchmark.OptimizedCharSliceWithPool‑net6.0	1 B	3 B	2 B	200.00%
Benchmarks.Trace.CharSliceBenchmark.OptimizedCharSlice‑net6.0	4 B	7 B	3 B	75.00%

Raw results

Branch	Method	Toolchain	Mean	StdError	StdDev	Gen 0	Gen 1	Gen 2	Allocated
master	OriginalCharSlice	net6.0	1.95ms	609ns	2.28μs	0	0	0	640.01 KB
master	OriginalCharSlice	netcoreapp3.1	2.06ms	4.72μs	17.7μs	0	0	0	640 KB
master	OriginalCharSlice	net472	2.71ms	1.73μs	6.7μs	100	0	0	641.95 KB
master	OptimizedCharSlice	net6.0	1.51ms	210ns	814ns	0	0	0	4 B
master	OptimizedCharSlice	netcoreapp3.1	1.67ms	365ns	1.42μs	0	0	0	1 B
master	OptimizedCharSlice	net472	1.94ms	249ns	965ns	0	0	0	0 b
master	OptimizedCharSliceWithPool	net6.0	807μs	59.1ns	229ns	0	0	0	1 B
master	OptimizedCharSliceWithPool	netcoreapp3.1	835μs	151ns	586ns	0	0	0	0 b
master	OptimizedCharSliceWithPool	net472	1.2ms	197ns	738ns	0	0	0	0 b
#7565	OriginalCharSlice	net6.0	1.9ms	5.9μs	22.1μs	0	0	0	640.01 KB
#7565	OriginalCharSlice	netcoreapp3.1	2.16ms	3.9μs	15.1μs	0	0	0	640 KB
#7565	OriginalCharSlice	net472	2.74ms	394ns	1.47μs	100	0	0	641.95 KB
#7565	OptimizedCharSlice	net6.0	1.33ms	70.9ns	275ns	0	0	0	7 B
#7565	OptimizedCharSlice	netcoreapp3.1	1.78ms	635ns	2.46μs	0	0	0	1 B
#7565	OptimizedCharSlice	net472	1.97ms	248ns	961ns	0	0	0	73 B
#7565	OptimizedCharSliceWithPool	net6.0	877μs	40.7ns	158ns	0	0	0	3 B
#7565	OptimizedCharSliceWithPool	netcoreapp3.1	902μs	112ns	435ns	0	0	0	1 B
#7565	OptimizedCharSliceWithPool	net472	1.16ms	108ns	418ns	0	0	0	47 B

Benchmarks.Trace.CIVisibilityProtocolWriterBenchmark - Faster 🎉 More allocations ⚠️

Faster 🎉 in #7565

Benchmark	base/diff	Base Median (ns)	Diff Median (ns)	Modality
Benchmarks.Trace.CIVisibilityProtocolWriterBenchmark.WriteAndFlushEnrichedTraces‑net472	1.123	984,761.30	877,257.50

More allocations ⚠️ in #7565

Benchmark	Base Allocated	Diff Allocated	Change	Change %
Benchmarks.Trace.CIVisibilityProtocolWriterBenchmark.WriteAndFlushEnrichedTraces‑net6.0	41.82 KB	42.72 KB	905 B	2.16%

Fewer allocations 🎉 in #7565

Benchmark	Base Allocated	Diff Allocated	Change	Change %
Benchmarks.Trace.CIVisibilityProtocolWriterBenchmark.WriteAndFlushEnrichedTraces‑netcoreapp3.1	42.29 KB	41.81 KB	-482 B	-1.14%

Raw results

Branch	Method	Toolchain	Mean	StdError	StdDev	Gen 0	Gen 1	Gen 2	Allocated
master	WriteAndFlushEnrichedTraces	net6.0	695μs	4.01μs	33.8μs	0	0	0	41.82 KB
master	WriteAndFlushEnrichedTraces	netcoreapp3.1	759μs	4.01μs	20.4μs	0	0	0	42.29 KB
master	WriteAndFlushEnrichedTraces	net472	987μs	3.03μs	11.3μs	4.81	0	0	55.97 KB
#7565	WriteAndFlushEnrichedTraces	net6.0	738μs	2.59μs	10μs	0	0	0	42.72 KB
#7565	WriteAndFlushEnrichedTraces	netcoreapp3.1	688μs	423ns	1.46μs	0	0	0	41.81 KB
#7565	WriteAndFlushEnrichedTraces	net472	875μs	1.72μs	6.22μs	8.33	0	0	56.12 KB

Benchmarks.Trace.DbCommandBenchmark - Same speed ✔️ Same allocations ✔️

Raw results

Branch	Method	Toolchain	Mean	StdError	StdDev	Gen 0	Gen 1	Gen 2	Allocated
master	ExecuteNonQuery	net6.0	1.92μs	9.49ns	39.1ns	0	0	0	1.02 KB
master	ExecuteNonQuery	netcoreapp3.1	2.57μs	11.6ns	44.8ns	0	0	0	1.02 KB
master	ExecuteNonQuery	net472	2.77μs	5.69ns	21.3ns	0.15	0.0136	0	987 B
#7565	ExecuteNonQuery	net6.0	1.94μs	7.24ns	28.1ns	0	0	0	1.02 KB
#7565	ExecuteNonQuery	netcoreapp3.1	2.66μs	8.97ns	34.7ns	0	0	0	1.02 KB
#7565	ExecuteNonQuery	net472	2.97μs	4.98ns	19.3ns	0.147	0.0147	0	987 B

Benchmarks.Trace.ElasticsearchBenchmark - Same speed ✔️ Same allocations ✔️

Raw results

Branch	Method	Toolchain	Mean	StdError	StdDev	Gen 0	Gen 1	Gen 2	Allocated
master	CallElasticsearch	net6.0	1.75μs	7.58ns	36.4ns	0	0	0	1.03 KB
master	CallElasticsearch	netcoreapp3.1	2.32μs	11.3ns	46.7ns	0	0	0	1.03 KB
master	CallElasticsearch	net472	3.5μs	4ns	15.5ns	0.158	0	0	1.04 KB
master	CallElasticsearchAsync	net6.0	1.84μs	6.28ns	24.3ns	0	0	0	1.01 KB
master	CallElasticsearchAsync	netcoreapp3.1	2.43μs	8.84ns	34.2ns	0	0	0	1.08 KB
master	CallElasticsearchAsync	net472	3.88μs	3.58ns	13.4ns	0.173	0	0	1.1 KB
#7565	CallElasticsearch	net6.0	1.77μs	4.78ns	18.5ns	0	0	0	1.03 KB
#7565	CallElasticsearch	netcoreapp3.1	2.29μs	10.8ns	44.7ns	0	0	0	1.03 KB
#7565	CallElasticsearch	net472	3.62μs	5.14ns	19.9ns	0.164	0	0	1.04 KB
#7565	CallElasticsearchAsync	net6.0	1.84μs	2.88ns	11.2ns	0	0	0	1.01 KB
#7565	CallElasticsearchAsync	netcoreapp3.1	2.45μs	11.9ns	49.1ns	0	0	0	1.08 KB
#7565	CallElasticsearchAsync	net472	3.9μs	5.24ns	20.3ns	0.156	0	0	1.1 KB

Benchmarks.Trace.GraphQLBenchmark - Same speed ✔️ Same allocations ✔️

Raw results

Branch	Method	Toolchain	Mean	StdError	StdDev	Gen 0	Gen 1	Gen 2	Allocated
master	ExecuteAsync	net6.0	2.01μs	8.69ns	33.6ns	0	0	0	952 B
master	ExecuteAsync	netcoreapp3.1	2.33μs	9.79ns	35.3ns	0	0	0	952 B
master	ExecuteAsync	net472	2.52μs	7.62ns	29.5ns	0.141	0	0	915 B
#7565	ExecuteAsync	net6.0	1.91μs	7.37ns	27.6ns	0	0	0	952 B
#7565	ExecuteAsync	netcoreapp3.1	2.34μs	6.9ns	25.8ns	0	0	0	952 B
#7565	ExecuteAsync	net472	2.61μs	2.4ns	9.28ns	0.144	0	0	915 B

Benchmarks.Trace.HttpClientBenchmark - Same speed ✔️ Same allocations ✔️

Raw results

Branch	Method	Toolchain	Mean	StdError	StdDev	Gen 0	Gen 1	Gen 2	Allocated
master	SendAsync	net6.0	6.98μs	5.84ns	20.2ns	0	0	0	2.36 KB
master	SendAsync	netcoreapp3.1	8.65μs	24.5ns	91.5ns	0	0	0	2.9 KB
master	SendAsync	net472	12.3μs	12.9ns	50.1ns	0.493	0	0	3.18 KB
#7565	SendAsync	net6.0	6.92μs	13ns	50.4ns	0	0	0	2.36 KB
#7565	SendAsync	netcoreapp3.1	8.26μs	27.4ns	102ns	0	0	0	2.9 KB
#7565	SendAsync	net472	11.8μs	10.3ns	39.7ns	0.468	0	0	3.18 KB

Benchmarks.Trace.Iast.StringAspectsBenchmark - Faster 🎉 More allocations ⚠️

Faster 🎉 in #7565

Benchmark	base/diff	Base Median (ns)	Diff Median (ns)	Modality
Benchmarks.Trace.Iast.StringAspectsBenchmark.StringConcatAspectBenchmark‑net6.0	1.194	553,600.00	463,500.00

More allocations ⚠️ in #7565

Benchmark	Base Allocated	Diff Allocated	Change	Change %
Benchmarks.Trace.Iast.StringAspectsBenchmark.StringConcatBenchmark‑net472	57.34 KB	65.54 KB	8.19 KB	14.29%
Benchmarks.Trace.Iast.StringAspectsBenchmark.StringConcatAspectBenchmark‑netcoreapp3.1	248.67 KB	258.63 KB	9.96 KB	4.01%

Fewer allocations 🎉 in #7565

Benchmark	Base Allocated	Diff Allocated	Change	Change %
Benchmarks.Trace.Iast.StringAspectsBenchmark.StringConcatBenchmark‑net6.0	44.9 KB	44.04 KB	-856 B	-1.91%

Raw results

Branch	Method	Toolchain	Mean	StdError	StdDev	Gen 0	Gen 1	Gen 2	Allocated
master	StringConcatBenchmark	net6.0	51.7μs	809ns	8μs	0	0	0	44.9 KB
master	StringConcatBenchmark	netcoreapp3.1	50.4μs	444ns	4.28μs	0	0	0	42.78 KB
master	StringConcatBenchmark	net472	57.4μs	281ns	1.16μs	0	0	0	57.34 KB
master	StringConcatAspectBenchmark	net6.0	555μs	2.58μs	9.65μs	0	0	0	277.88 KB
master	StringConcatAspectBenchmark	netcoreapp3.1	523μs	2.44μs	9.11μs	0	0	0	248.67 KB
master	StringConcatAspectBenchmark	net472	404μs	2.29μs	16.8μs	0	0	0	278.53 KB
#7565	StringConcatBenchmark	net6.0	41.3μs	189ns	732ns	0	0	0	44.04 KB
#7565	StringConcatBenchmark	netcoreapp3.1	49.6μs	256ns	1.17μs	0	0	0	42.64 KB
#7565	StringConcatBenchmark	net472	56.5μs	181ns	678ns	0	0	0	65.54 KB
#7565	StringConcatAspectBenchmark	net6.0	467μs	2.25μs	8.72μs	0	0	0	277.26 KB
#7565	StringConcatAspectBenchmark	netcoreapp3.1	515μs	1.86μs	7.22μs	0	0	0	258.63 KB
#7565	StringConcatAspectBenchmark	net472	396μs	2.06μs	14.9μs	0	0	0	278.53 KB

Benchmarks.Trace.ILoggerBenchmark - Same speed ✔️ Same allocations ✔️

Raw results

Branch	Method	Toolchain	Mean	StdError	StdDev	Gen 0	Gen 1	Gen 2	Allocated
master	EnrichedLog	net6.0	2.48μs	8.94ns	34.6ns	0	0	0	1.7 KB
master	EnrichedLog	netcoreapp3.1	3.58μs	12.9ns	50.1ns	0	0	0	1.7 KB
master	EnrichedLog	net472	3.78μs	6.93ns	26.9ns	0.246	0	0	1.64 KB
#7565	EnrichedLog	net6.0	2.59μs	0.73ns	2.63ns	0	0	0	1.7 KB
#7565	EnrichedLog	netcoreapp3.1	3.52μs	12.3ns	47.6ns	0	0	0	1.7 KB
#7565	EnrichedLog	net472	3.72μs	2.15ns	8.34ns	0.243	0	0	1.64 KB

Benchmarks.Trace.Log4netBenchmark - Same speed ✔️ Same allocations ✔️

Raw results

Branch	Method	Toolchain	Mean	StdError	StdDev	Gen 0	Gen 1	Gen 2	Allocated
master	EnrichedLog	net6.0	125μs	546ns	2.5μs	0	0	0	4.31 KB
master	EnrichedLog	netcoreapp3.1	127μs	133ns	498ns	0	0	0	4.31 KB
master	EnrichedLog	net472	167μs	105ns	405ns	0	0	0	4.52 KB
#7565	EnrichedLog	net6.0	122μs	123ns	476ns	0	0	0	4.31 KB
#7565	EnrichedLog	netcoreapp3.1	127μs	101ns	351ns	0	0	0	4.31 KB
#7565	EnrichedLog	net472	168μs	63.8ns	247ns	0	0	0	4.52 KB

Benchmarks.Trace.NLogBenchmark - Same speed ✔️ Same allocations ✔️

Raw results

Branch	Method	Toolchain	Mean	StdError	StdDev	Gen 0	Gen 1	Gen 2	Allocated
master	EnrichedLog	net6.0	4.98μs	10.8ns	41.6ns	0	0	0	2.26 KB
master	EnrichedLog	netcoreapp3.1	6.8μs	13.1ns	50.6ns	0	0	0	2.26 KB
master	EnrichedLog	net472	7.26μs	5.4ns	20.9ns	0.325	0	0	2.08 KB
#7565	EnrichedLog	net6.0	5.04μs	8.93ns	34.6ns	0	0	0	2.26 KB
#7565	EnrichedLog	netcoreapp3.1	6.64μs	18.5ns	71.7ns	0	0	0	2.26 KB
#7565	EnrichedLog	net472	7.36μs	6.7ns	26ns	0.329	0	0	2.08 KB

Benchmarks.Trace.RedisBenchmark - Same speed ✔️ Same allocations ✔️

Raw results

Branch	Method	Toolchain	Mean	StdError	StdDev	Gen 0	Gen 1	Gen 2	Allocated
master	SendReceive	net6.0	1.94μs	10.1ns	50.5ns	0	0	0	1.2 KB
master	SendReceive	netcoreapp3.1	2.86μs	7.7ns	29.8ns	0	0	0	1.2 KB
master	SendReceive	net472	3.05μs	4.77ns	18.5ns	0.186	0	0	1.2 KB
#7565	SendReceive	net6.0	2.04μs	10.7ns	53.6ns	0	0	0	1.2 KB
#7565	SendReceive	netcoreapp3.1	2.66μs	13.1ns	55.5ns	0	0	0	1.2 KB
#7565	SendReceive	net472	3.13μs	5.53ns	21.4ns	0.189	0	0	1.2 KB

Benchmarks.Trace.SerilogBenchmark - Same speed ✔️ Same allocations ✔️

Raw results

Branch	Method	Toolchain	Mean	StdError	StdDev	Gen 0	Gen 1	Gen 2	Allocated
master	EnrichedLog	net6.0	4.16μs	17.2ns	61.9ns	0	0	0	1.58 KB
master	EnrichedLog	netcoreapp3.1	5.47μs	12.8ns	49.6ns	0	0	0	1.63 KB
master	EnrichedLog	net472	6.43μs	4.53ns	16.3ns	0.322	0	0	2.03 KB
#7565	EnrichedLog	net6.0	4.25μs	12ns	46.6ns	0	0	0	1.58 KB
#7565	EnrichedLog	netcoreapp3.1	5.4μs	8.99ns	34.8ns	0	0	0	1.63 KB
#7565	EnrichedLog	net472	6.39μs	5.08ns	19.7ns	0.319	0	0	2.03 KB

Benchmarks.Trace.SpanBenchmark - Same speed ✔️ Same allocations ✔️

Raw results

Branch	Method	Toolchain	Mean	StdError	StdDev	Gen 0	Gen 1	Gen 2	Allocated
master	StartFinishSpan	net6.0	742ns	3.39ns	13.6ns	0	0	0	576 B
master	StartFinishSpan	netcoreapp3.1	919ns	0.601ns	2.33ns	0	0	0	576 B
master	StartFinishSpan	net472	891ns	0.563ns	2.18ns	0.0895	0	0	578 B
master	StartFinishScope	net6.0	878ns	4.86ns	24.8ns	0	0	0	696 B
master	StartFinishScope	netcoreapp3.1	1.14μs	6.1ns	32.3ns	0	0	0	696 B
master	StartFinishScope	net472	1.11μs	1.53ns	5.92ns	0.0995	0	0	658 B
#7565	StartFinishSpan	net6.0	746ns	3.66ns	15.1ns	0	0	0	576 B
#7565	StartFinishSpan	netcoreapp3.1	932ns	4.62ns	20.1ns	0	0	0	576 B
#7565	StartFinishSpan	net472	911ns	0.289ns	1.08ns	0.0878	0	0	578 B
#7565	StartFinishScope	net6.0	875ns	4.64ns	25ns	0	0	0	696 B
#7565	StartFinishScope	netcoreapp3.1	1.1μs	5.78ns	27.7ns	0	0	0	696 B
#7565	StartFinishScope	net472	1.11μs	0.502ns	1.81ns	0.0998	0	0	658 B

Benchmarks.Trace.TraceAnnotationsBenchmark - Same speed ✔️ Same allocations ✔️

Raw results

Branch	Method	Toolchain	Mean	StdError	StdDev	Gen 0	Gen 1	Gen 2	Allocated
master	RunOnMethodBegin	net6.0	1.03μs	5.57ns	31ns	0	0	0	696 B
master	RunOnMethodBegin	netcoreapp3.1	1.45μs	6.05ns	23.4ns	0	0	0	696 B
master	RunOnMethodBegin	net472	1.44μs	0.394ns	1.42ns	0.101	0	0	658 B
#7565	RunOnMethodBegin	net6.0	1.04μs	1.61ns	6.24ns	0	0	0	696 B
#7565	RunOnMethodBegin	netcoreapp3.1	1.35μs	6.71ns	29.2ns	0	0	0	696 B
#7565	RunOnMethodBegin	net472	1.43μs	0.654ns	2.53ns	0.1	0	0	658 B