When You Shouldn't Use Await Async in .NET

The post discusses scenarios where synchronous methods can outperform asynchronous ones in .NET, particularly with large datasets and very long strings in Entity Framework Core. A demonstration using a Docker-hosted SQL Server shows the sync version running faster and using less memory than the async version. A profiling tool, Ultra, is used to analyze and visualize the performance. Although a specific bug impacts async performance in some cases, async methods generally scale better and should typically be preferred for their non-blocking nature.