Learn how DATAS in .NET 10 adapts heap size, what changes to expect versus previous Server Garbage Collection (GC) behavior, and how to decide whether to tune or disable it.
  • GC: Garbage Collector manages the allocation and release of memory for your application
  • DATAS: Dynamic Adaptation To Application Sizes

In .NET 9 we enabled DATAS by default. But .NET 9 is not an LTS release so for many people they will be getting DATAS for the first time when they upgrade to .NET 10. This was a tough decision because GC features are usually the kind that don’t require user intervention — but DATAS is a bit different. That’s why this post is titled “preparing for” instead of just “what’s new” 😊.

I’ll talk about how we generally decide which performance features to add, why DATAS is so different from typical GC features, and the tuning changes introduced since my last DATAS blog post. I’ll also share two examples of how I tuned DATAS in first-party scenarios.