There are many ways to communicate between a C# client and a C# server. Some are robust, others not so much. Some are very fast, others aren't. It's important to know the different options so you can decide what's best for you.
.NET Core 3 was recently released and brought with it a bunch of innovations, including a brand new JSON (de)serializer System.Text.Json. We're going to compare this serializer with Newtonsoft.Json and other major .NET serializers. Check out this epic performance battle.