Today, I am pleased to announce the 5th edition of my book, titled Rock Your Code: Code & App Performance for Microsoft .NET, now available on Amazon.

Supercharge your .NET applications and transform the way you write code with Röck Yöur Cöde: Code & App Performance for Microsoft .NET, the definitive hands-on performance guide for modern .NET developers.

Written by Microsoft MVP David McCarter, a software engineer with over 20 years of experience, global conference speaker, author of dotNetTips.com, and creator of the Spargine libraries, this book dives deep into the real-world performance techniques every .NET developer needs. Backed by thousands of benchmarks, real domain objects, and high-traffic production experience, McCarter shows you how to write code that isn’t just correct—but fast, efficient, scalable, and built to perform at enterprise scale.

Unlike academic performance books filled with theory and toy examples, this edition delivers proven, repeatable techniques for .NET 10 and beyond, including:

• High-performance coding patterns grounded in real-world C#
• Deep insights into memory, collections, LINQ, strings, globalization, and file I/O
• Practical guidance for improving both runtime speed and cloud cost
• BenchmarkDotNet examples showing what truly makes .NET faster
• Step-by-step use of Spargine—the performance-boosting library used worldwide
• Best practices for analyzers, caching, logging, serialization, and source generators
• Real successes from mission-critical systems handling tens of thousands of messages per minute

Whether you’re building APIs, web apps, cloud-native services, or desktop software, this book will teach you how to:

• Detect and eliminate hidden performance traps
• Choose the fastest techniques for common coding tasks
• Build scalable apps that stay fast as load increases
• Think like a performance engineer from the moment you write the first line of code
• Benchmark everything that matters—just like the .NET runtime team

This is the companion to McCarter’s acclaimed Röck Yöur Cöde: Coding Standards for Microsoft .NET, and together they form the ultimate toolkit for writing clean, modern, high-performance .NET applications.

If you’re serious about .NET performance—and ready to write code that screams like a cranked-up Marshall stack—this book will take you there.

Write better. Run faster. Scale farther.
Time to Röck Yöur Cöde.

How To Purchase

Click on one of the links below to purchase the book in these countries!

Paperback

• Australia: https://www.amazon.com.au/dp/B0G9LWNX54
• Canada: https://www.amazon.ca/dp/B0G9LWNX54
• France: https://www.amazon.fr/dp/B0G9LWNX54
• Germany: https://www.amazon.de/dp/B0G9LWNX54
• Italy: https://www.amazon.it/dp/B0G9LWNX54
• Japan: https://www.amazon.co.jp/dp/B0G9LWNX54
• Netherlands: https://www.amazon.nl/dp/B0G9LWNX54
• Poland: https://www.amazon.pl/dp/B0G9LWNX54
• Spain: https://www.amazon.es/dp/B0G9LWNX54
• Sweden: https://www.amazon.se/dp/B0G9LWNX54
• United Kingdom: https://www.amazon.co.uk/dpB0G9LWNX54
• United States: https://www.amazon.com/dp/B0G9LWNX54

If you or your team require assistance with implementing standards, conducting code reviews, or any related tasks, kindly reach out to me through the link below.

About

For more information, go to:

Code & App Performance

Spargine

Rock Your Code: Coding Standards for Microsoft .NET (20th Anniversary Edition)