Perf improvement: https, json, json_middleware

| Scenario | Environment | Date | Old RPS | New RPS | Change | Deviation | StDev | Dependencies |
| -------- | ----------- | ---- | ------- | ------- | ------ | --------- | ----- | ------------ |
| https | Json Https 13- Trends cobalt-hosted-lin | 05/22/2026 10:44:40 | 278,890 | 590,995 | 111.91 % (312,105) :thumbsup: | 2.34 σ | 133,454.41 | Changes NameVersionDiff Microsoft.AspNetCore.Antiforgery.dll `11.0.0-preview.5.26269.119` -> `11.0.0-preview.5.26271.122` https://github.com/dotnet/dotnet/compare/85afae000275066ce60df20227f736154bf172ab...3388c93e0437ebc67dd7cf368e7e817ac7b71170 Microsoft.AspNetCore.App `11.0.0-preview.5.26269.119` -> `11.0.0-preview.5.26271.122` https://github.com/dotnet/dotnet/compare/85afae000275066ce60df20227f736154bf172ab...3388c93e0437ebc67dd7cf368e7e817ac7b71170 Microsoft.NETCore.App `11.0.0-preview.5.26269.119` -> `11.0.0-preview.5.26271.122` https://github.com/dotnet/dotnet/compare/85afae000275066ce60df20227f736154bf172ab...3388c93e0437ebc67dd7cf368e7e817ac7b71170 |
| json | Json 13- Trends cobalt-hosted-lin | 05/22/2026 10:43:23 | 315,151 | 740,558 | 134.98 % (425,407) :thumbsup: | 2.56 σ | 166,122.70 | Changes NameVersionDiff Microsoft.AspNetCore.Antiforgery.dll `11.0.0-preview.5.26269.119` -> `11.0.0-preview.5.26271.122` https://github.com/dotnet/dotnet/compare/85afae000275066ce60df20227f736154bf172ab...3388c93e0437ebc67dd7cf368e7e817ac7b71170 Microsoft.AspNetCore.App `11.0.0-preview.5.26269.119` -> `11.0.0-preview.5.26271.122` https://github.com/dotnet/dotnet/compare/85afae000275066ce60df20227f736154bf172ab...3388c93e0437ebc67dd7cf368e7e817ac7b71170 Microsoft.NETCore.App `11.0.0-preview.5.26269.119` -> `11.0.0-preview.5.26271.122` https://github.com/dotnet/dotnet/compare/85afae000275066ce60df20227f736154bf172ab...3388c93e0437ebc67dd7cf368e7e817ac7b71170 |
| json_middleware | Json 400k 13- Trends cobalt-hosted-lin-azl3 | 05/21/2026 08:40:38 | 13,676 | 24,135 | 76.47 % (10,459) :thumbsup: | 2.32 σ | 4,510.29 | Changes NameVersionDiff Microsoft.AspNetCore.Antiforgery.dll `11.0.0-preview.5.26268.112` -> `11.0.0-preview.5.26269.119` https://github.com/dotnet/dotnet/compare/c5d1f734662eb718e7431a4e679a29e47c380f04...85afae000275066ce60df20227f736154bf172ab Microsoft.AspNetCore.App `11.0.0-preview.5.26268.112` -> `11.0.0-preview.5.26269.119` https://github.com/dotnet/dotnet/compare/c5d1f734662eb718e7431a4e679a29e47c380f04...85afae000275066ce60df20227f736154bf172ab Microsoft.NETCore.App `11.0.0-preview.5.26268.112` -> `11.0.0-preview.5.26269.119` https://github.com/dotnet/dotnet/compare/c5d1f734662eb718e7431a4e679a29e47c380f04...85afae000275066ce60df20227f736154bf172ab |

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

@sebastienros

The issue contains benchmark results for the https, json, and json_middleware scenarios and links to a PowerBI Dashboard. Start by reviewing those benchmark results and the dashboard; the issue does not identify files, tests, an entry point, a requested code change, or concrete completion criteria.

Written by the indexing model from the issue text.