# davidfowl/AspNetCoreDiagnosticScenarios

This repository has examples of broken patterns in ASP.NET Core applications

Repository: https://github.com/davidfowl/AspNetCoreDiagnosticScenarios
Canonical: https://ross.abutalabs.com/products/aspnetcorediagnosticscenarios
Language: C#
License Family: other
Last push: 2024-05-28T16:50:09+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 2884, "days_push": 827, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 8505, forks 773 (observed 2026-08-28T04:10:23.176938+00:00)

## What it is
A collection of examples of problematic patterns in ASP.NET Core applications with guidance on how to fix them, based on real-world customer issues. It includes general ASP.NET Core and asynchronous programming guidance for writing scalable web services.

## Use cases
- learn common async/await pitfalls in ASP.NET Core
- diagnose why my ASP.NET Core app is slow or blocking
- find examples of broken patterns in scalable web services
- learn best practices for writing scalable ASP.NET Core services
- understand sync-over-async deadlocks in .NET
- review guidance before a production performance audit

## When to choose
- you build or maintain ASP.NET Core web services and want to avoid common performance pitfalls
- you are debugging blocking, deadlocking, or scalability issues in a .NET web app
- you want curated, real-world-derived guidance on async programming in C#

## When to avoid
- you need runnable production code or a library to drop into your project
- you work outside the .NET/ASP.NET Core ecosystem
- you need up-to-date coverage of the latest .NET versions, as the repo is in maintenance mode

## Facets
- artifact type: learning-resource
- maturity: maintenance
- function: developer-tools, documentation
- domain: web-development, backend, developer-tools, tutorials
- platform: dotnet, cross-platform
- tags: aspnet-core, async-programming, performance, anti-patterns, diagnostics, csharp

## Member repositories
- davidfowl/AspNetCoreDiagnosticScenarios (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:10:23.176938+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:26:42.499416+00:00, confidence not recorded.
  - readme: https://github.com/davidfowl/AspNetCoreDiagnosticScenarios (fetched 2026-08-28T04:10:23.176938+00:00, sha 64adb4b293bf)
- Data as of 2026-08-30T08:39:29.467469+00:00.