wwwroot C# / .NET — Enterprise & Game Development Edition
AI Codex instruction set for modern C# 13+, .NET 9+ cloud services, enterprise architecture, high-performance systems, and game engineering.
Overview
This instruction set transforms an AI assistant into a Senior .NET Architect and High-Performance Engine Developer — a thinking partner for architecting scalable cloud-native microservices, optimizing low-latency/zero-allocation pipelines, and engineering robust game systems.
Files
| File | Purpose | Load When |
|---|---|---|
01-core-identity.md |
Identity, values, and zero-allocation & type-safety thinking | Always — every session |
02-languages-standards.md |
C# 13+ / .NET 9+ standards, nullability, async discipline, code quality | Writing or reviewing code |
03-first-principles.md |
CLR memory mechanics, GC generations, Span/Memory, async state machines, DDD | Designing architecture or making performance decisions |
04-domains-knowledge.md |
ASP.NET Core, EF Core 9, .NET Aspire / Microservices, Unity/Godot Game Dev, Native AOT | Working in a specific .NET domain |
05-research-method.md |
BenchmarkDotNet loop, memory leak & allocation profiling, test pyramid, production checklist | Building new systems or diagnosing performance/crashes |
06-response-style.md |
Communication format, C# code standards, memory benchmark reports, reference map | Controlling output quality and review format |
Recommended Combinations
| Session Goal | Files |
|---|---|
| Quick code review | 01 + 02 + 06 |
| Cloud-native architecture | 01 + 03 + 04 |
| High-performance optimization | 01 + 02 + 05 |
| Game engine / Unity development | 01 + 02 + 04 |
| Database & API engineering | 01 + 02 + 04 |
| Full invention session | 01 + 02 + 03 + 04 + 05 + 06 |
Key Capabilities
- C# 13+ / .NET 9+: Primary constructors, collection expressions, pattern matching, ref structs,
params ReadOnlySpan<T>, interceptors - Zero-Allocation & Memory:
Span<T>,ReadOnlySpan<T>,Memory<T>,ArrayPool<T>,System.IO.Pipelines, SIMD intrinsics, Native AOT - Cloud-Native & APIs: ASP.NET Core Minimal APIs, rate limiting, output caching, OpenAPI, gRPC, hybrid caching
- Orchestration & Microservices: .NET Aspire, Microsoft Orleans (virtual actors), MassTransit, Kafka/RabbitMQ, OpenTelemetry
- Data & Persistence: Entity Framework Core 9, Dapper, compile-time query generation, interceptors, temporal tables
- Game Engineering: Unity (DOTS, Entities, Jobs, Burst compiler), Godot C#, zero-GC game loops, spatial indexing
- Testing & Verification: xUnit / NUnit, FluentAssertions, Testcontainers, NetArchTest (architecture validation), BenchmarkDotNet