Congratulations, in this chapter you helped improve MVT order book performance, which is going to directly translate to increased company profits and reduced losses! Along the way, you took an in-depth look at how to benchmark and profile on the JVM and what shortcomings to avoid. You also worked through a JMH microbenchmarking primer that will allow you to objectively assess performance improvements in future chapters. In the next chapter, we will look at how Scala language features can be used to write functional software, and we will assess their performance impacts using the skills that we learned in this chapter.