Cross Cutting Performance Improvements#73

Merged

Im5tu merged 34 commits into

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perf/cross-cutting

Mar 17, 2026

Commits on Mar 12, 2026

perf: Seal eligible classes to enable JIT devirtualization
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perf: Zero-allocation response logging in AwsServiceClient.SendAsync
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perf: Add collection capacity hints to reduce resizing allocations
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refactor: Consolidate ProcessAwsErrorHeaders into base AwsServiceClient
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perf: Port pooled response reading to XML and SNS clients
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perf: Avoid byte[] allocation in ApiErrorReader
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Fixed benchmark
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perf: Add shared Throw helper class for DoesNotReturn throw extraction
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perf: Extract LogScope indexer throws into Throw.IndexOutOfRange helper
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perf: Use Throw.JsonException in Bedrock JSON converters
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perf: Add [DoesNotReturn] to MissingAttributeException.Throw methods
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perf: Extract DynamoPaginationException throws into [DoesNotReturn] helper
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perf: Use Throw.InvalidOperation in AwsServiceClient.ReadResponseBytesAsync
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perf: Replace RequestSigner private throw helpers with shared Throw class
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perf: Update generator templates to emit Throw helpers in generated code
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fix: Make Throw class public for generated code and fix switch fall-through
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test: Update generator test assertion to match Throw helper pattern
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perf: Guard BeginScope calls with log-level check in AwsServiceClient
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perf: Cache MediaTypeHeaderValue in XmlAwsServiceClient and SnsServiceClient
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perf: Cache common HTTP status code strings in AwsServiceClient
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refactor: Extract AwsServiceClient log scope key names to constants
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refactor: Extract ResponseHeaders header name constants
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refactor: Extract RequestSigner header name constants
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perf: Guard amzHeaders Dictionary and BeginScope with log-level check
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perf: Replace FirstOrDefault with manual enumeration in ResponseHeaders
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perf: Use span-based TrimStart in IsJsonSerialized and IsXmlSerialized
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Commits on Mar 17, 2026