C# (.NET) Application Performance: Optimization and Profiling

The book "C# (.NET) Application Performance" is a practical guide for developers who want to create fast, responsive, and scalable applications on the .NET platform. In today's world, application speed directly impacts user experience, infrastructure costs, and product competitiveness. This book will help you systematically approach optimization issues, avoiding common mistakes and using proven techniques.

What is this book about?

The book covers the complete performance workflow: from diagnosing bottlenecks to implementing optimizations. You will learn:

• Profiling basics: how to use PerfView, dotTrace, BenchmarkDotNet, and built-in Visual Studio tools to find bottlenecks.
• Memory management and garbage collection (GC): how GC works in .NET, how to reduce allocations, avoid fragmentation, and minimize pauses.
• Multithreading and asynchrony: proper use of Task, Parallel LINQ, thread pool, as well as dealing with locks and contention.
• Code optimization: working with strings, collections, LINQ, reflection, and Span to minimize overhead.
• Caching and data handling: caching strategies, database query optimization, using Redis and MemoryCache.
• Network interactions: configuring HttpClient, gRPC, WebSockets, and reducing latency.

Who is this book for?

The book will be useful for:

• C# developers with 1+ year of experience who want to improve their optimization skills.
• Team Leads and architects responsible for the performance of high-load systems.
• DevOps engineers configuring .NET applications in a production environment.
• Anyone who has encountered slow application issues and wants to understand how to fix them.

What will you learn after reading?

• How to conduct benchmarking and A/B testing of changes.
• How to find and eliminate memory leaks and inefficient algorithms.
• How to configure GC for different scenarios (web server, desktop, games).
• How to write code that remains consistently fast under load.
• How to use modern .NET features (Span, Memory, ValueTask) to improve performance.

The book contains numerous real-world code examples, charts, and tests. All examples are relevant for .NET 6/7/8. The author is a practicing developer with 10 years of experience in high-load C# systems. Dive into the world of optimization and make your applications faster!