You expanded your awareness of all the data storage and distribution collections offered by Hazelcast. Additionally, you learned about not only the default atomic nature of data concurrency, but also the mechanisms that can be used to combat and guard concurrency should an application demand great degrees of control over data flow. Finally, you discovered the comparable versions of features that are found in traditional alternatives as well as the ones offered by other Java technologies. By now, you must have figured out how extensive and flexible Hazelcast can be. Though we've touched on most of the basics, there are plenty of details that are left to be discovered.

In this chapter, you discovered the various types of collections that are available for use in applications. In the next chapter, you will see how Hazelcast splits and shares data around to unlock its incredible scalability.