Modern Systems Programming with Scala Native

Performance Testing with Gatling

Now that we have a working web server, let’s test it out. If you’ve configured the Docker-based environment, port 8080 should be open, and you can run the server like this:

:scala-native:httpserver ./target/scala-2.11/httpserver-out
bind returned 0
listen returned 0
listening on port 8080

In this way, you should be able to access it at http://localhost:8080. We want to go beyond basic interactive testing, however. We want to stress test our server’s performance under realistic load.

Why Measure?

As I noted at the start of the chapter, implementing performant servers is hard. By testing the performance of our server, we can set a baseline for comparison to the more advanced approaches we’ll take in Part II ...