C# & .NET 8 Architect Mastery

The CLR Deep Dive: Stack, Heap, and Garbage Collection (GC) Value Types vs Reference Types: Structs, Records, and Classes Span<T> and Memory<T>: Zero-copy high-performance code Benchmarking with Benchmark.DotNet: Measuring nano-seconds Async/Await Internals: The State Machine and TaskContext ValueTask vs Task: Avoiding allocation in hot paths Task.WhenAll vs Parallel.ForEachAsync: Concurrency at scale Thread Safety & Multi-threading: Locks, Semaphores, and Interlocked Primary Constructors & Collection Expressions Pattern Matching: Switch expressions and Recursive patterns Required Members & Init-Only properties Native AOT (Ahead of Time): Deployment for serverless/edge Dependency Injection (DI): Lifetime management and Captive Dependencies The Options Pattern: Type-safe configuration management The Factory & Builder Patterns in Modern .NET Middleware Architecture: Building custom ASP.NET Core pipelines Reflection & Attributes: Building custom frameworks Expression Trees: Building dynamic LINQ queries Source Generators: Compile-time code generation for speed Dynamic Types & ExpandoObject: When and when not to use them Unit Testing Patterns: xUnit, Moq, and FluentAssertions Integration Testing with WebApplicationFactory Mutation Testing: Testing the quality of your tests TDD (Test Driven Development) for Senior Architects Minimal APIs vs Controllers: Choice of architecture Rate Limiting & Throttling in ASP.NET Core Versioning Strategies: URL vs Header vs Media Type Real-time Web with SignalR and WebSockets Case Study: Designing a High-Throughput Payment Gateway in .NET Case Study: Solving Memory Leaks and CPU Spikes in Production

public class UserService(IDbContext db, ILogger logger) {
    public void Save() => logger.Log("Saving to " + db.Name);
}

List list = [1, 2, 3];
int[] array = [4, 5, 6];
Span span = [7, 8, 9];