Type safety, LINQ, async/await, ASP.NET Core Minimal APIs, EF Core 9, and cloud-native architecture.
Master modern C# 13 and .NET 9: Common Language Runtime (CLR) architecture, Nullable Reference Types, records, pattern matching, LINQ expressions, asynchronous programming with Task/ValueTask, Dependency Injection, high-performance ASP.NET Core Minimal APIs, Entity Framework Core 9, zero-allocation memory optimization with Span<T>/Memory<T>, and cloud-native microservices with Docker and Polly resilience.
Understand the Common Language Runtime (CLR), JIT compiler (RyuJIT), Native AOT compilation, and CLI toolchain.
Master structs vs classes, Nullable Reference Types (`#nullable enable`), records, and `with` expressions.
Master C# pattern matching, type patterns, relational patterns, property patterns, and default interface methods.
Master fluent LINQ, deferred execution, IEnumerable vs IQueryable, and Expression Trees for ORMs.
Master TAP pattern, Task.WhenAll, cancellation tokens (CancellationToken), and zero-allocation ValueTask<T>.
Master IServiceCollection, Transient vs Scoped vs Singleton lifetimes, IOptions<T>, and Serilog logging.
Build ultra-fast REST APIs, custom middleware pipelines, endpoint filters, and OpenAPI validation.
Master DbContext, Code-First migrations, split queries, AsNoTracking, and compiled queries.
Master zero-allocation memory slices, Span<T>, ReadOnlySpan<T>, Memory<T>, stackalloc, and ArrayPool.
Master Protocol Buffers (.proto), high-speed binary gRPC services, streaming RPCs, and SignalR WebSockets.
Master distributed system resilience, retries, exponential backoff, circuit breakers (Polly), and Docker containerization.
Master the .NET RyuJIT compiler: Tier 0 (Quick JIT) vs Tier 1 (Optimized), Dynamic Profile-Guided Optimization (PGO), and loop vectorization.
Master zero-allocation socket networking: `System.IO.Pipelines` (Pipe, PipeReader, PipeWriter), Bedrock architecture, and SequenceReader.
Extract peak mathematical throughput in .NET 9: `Vector512<T>`, `Vector256<T>`, AVX-512 hardware intrinsics, and SIMD array math.
Master lockless multi-threading in C#: `Interlocked` operations, `Volatile.Read/Write`, memory barriers, and the LMAX Disruptor pattern.
Build instant-startup native binaries with .NET 9 Native AOT: static code trimming, reflection metadata warnings, and UnmanagedCallersOnly.