This 7 parts video series is what you need to watch in order to understand the Big O Notation and how to use it.
In this tutorial Christopher Franklin will discusses various aspects of Java Platform Module System (JPMS), or “Modules”. He also demonstrates the concepts by building a simple project. Here is the link https://www.baeldung.com/java-9-modularity
In this video Ed Burns shows how to build a Serverless State Service for the Cloud using Java 9.
Technical White Paper Here is a link to the technical white paper Click here to download the White Paper PDF