Perf improvement: json, json_middleware, single_query

| Scenario | Environment | Date | Old RPS | New RPS | Change | Deviation | StDev | Dependencies |
| -------- | ----------- | ---- | ------- | ------- | ------ | --------- | ----- | ------------ |
| json | Json 9- Trends cobalt-cloud-lin-azl3-dual | 07/03/2026 09:23:50 | 179,605 | 199,413 | 11.03 % (19,808) :thumbsup: | 3.62 σ | 5,470.77 | Changes NameVersionDiff Microsoft.AspNetCore.Antiforgery.dll `11.0.0-preview.7.26330.112` -> `11.0.0-preview.7.26352.106` https://github.com/dotnet/dotnet/compare/a9679a8de87742e170318ea39f7f0e2874bcd441...f2c93f81b35ddc48dd5ad22c759821277db6dfdf Microsoft.AspNetCore.App `11.0.0-preview.7.26330.112` -> `11.0.0-preview.7.26352.106` https://github.com/dotnet/dotnet/compare/a9679a8de87742e170318ea39f7f0e2874bcd441...f2c93f81b35ddc48dd5ad22c759821277db6dfdf Microsoft.NETCore.App `11.0.0-preview.7.26330.112` -> `11.0.0-preview.7.26352.106` https://github.com/dotnet/dotnet/compare/a9679a8de87742e170318ea39f7f0e2874bcd441...f2c93f81b35ddc48dd5ad22c759821277db6dfdf |
| json_middleware | Json 10k 9- Trends cobalt-cloud-lin-azl3-dual | 07/03/2026 09:29:58 | 115,687 | 128,021 | 10.66 % (12,334) :thumbsup: | 4.73 σ | 2,607.06 | Changes NameVersionDiff Microsoft.AspNetCore.Antiforgery.dll `11.0.0-preview.7.26330.112` -> `11.0.0-preview.7.26352.106` https://github.com/dotnet/dotnet/compare/a9679a8de87742e170318ea39f7f0e2874bcd441...f2c93f81b35ddc48dd5ad22c759821277db6dfdf Microsoft.AspNetCore.App `11.0.0-preview.7.26330.112` -> `11.0.0-preview.7.26352.106` https://github.com/dotnet/dotnet/compare/a9679a8de87742e170318ea39f7f0e2874bcd441...f2c93f81b35ddc48dd5ad22c759821277db6dfdf Microsoft.NETCore.App `11.0.0-preview.7.26330.112` -> `11.0.0-preview.7.26352.106` https://github.com/dotnet/dotnet/compare/a9679a8de87742e170318ea39f7f0e2874bcd441...f2c93f81b35ddc48dd5ad22c759821277db6dfdf |
| single_query | Single Query Minimal APIs 13- Trends Database cobalt-cloud-lin | 07/03/2026 11:18:07 | 44,344 | 46,529 | 4.93 % (2,185) :thumbsup: | 4.10 σ | 533.38 | Changes NameVersionDiff Microsoft.AspNetCore.Antiforgery.dll `11.0.0-preview.7.26330.112` -> `11.0.0-preview.7.26352.106` https://github.com/dotnet/dotnet/compare/a9679a8de87742e170318ea39f7f0e2874bcd441...f2c93f81b35ddc48dd5ad22c759821277db6dfdf Microsoft.AspNetCore.App `11.0.0-preview.7.26330.112` -> `11.0.0-preview.7.26352.106` https://github.com/dotnet/dotnet/compare/a9679a8de87742e170318ea39f7f0e2874bcd441...f2c93f81b35ddc48dd5ad22c759821277db6dfdf Microsoft.NETCore.App `11.0.0-preview.7.26330.112` -> `11.0.0-preview.7.26352.106` https://github.com/dotnet/dotnet/compare/a9679a8de87742e170318ea39f7f0e2874bcd441...f2c93f81b35ddc48dd5ad22c759821277db6dfdf |

[PowerBI Dashboard](https://aka.ms/aspnet/benchmarks)

@sebastienros

This report contains benchmark results for json, json_middleware, and single_query, plus a PowerBI dashboard and dependency comparison. No source file, test, entry point, concrete change, or acceptance criteria is named; inspect the linked benchmark data first and clarify which scenario and outcome define done.

Written by the indexing model from the issue text.