We've covered a lot in this chapter, and it should hopefully be clear that being a high-performance developer requires more than simply being a capable programmer. There are many externalities to consider around your code.
You now understand the basics of I/O, and the physical causes of the intrinsic limitations present. You can analyze and diagnose how a network logically fits together. We have covered how to make better use of the network to reduce overall latency, which is important as more I/O operations now happen over a network. You have also seen how to make better use of a database, and how to do more with fewer operations.
In the next chapter, we will dig into code execution in detail, and show you how to speed up your C#. We'll see how .NET Core and ASP.NET Core perform so much better than the previous versions, and how you can take advantage of these improvements.