Summary

In this chapter, we explained all the possible sinks available with Storm. There is in-built integration available between Storm and the sinks but they are not mature enough to run on the required configuration. So in this chapter we used plain Java code to connect with any external tool for linkage. First we explained the integration of Storm and the latest version of Cassandra. Then we looked at in-memory databases which are required in all types of usecases related to Storm. We explained the integration of Storm and Hazelcast. After integration with Cassandra and Hazelcast, one more important integration was explained: the presentation layer. So we chose Elasticsearch with Grafana, and completed the example. In the end, we provided one problem to the reader so that the reader can think about and write the code using the same sinks that were explained in the initial part of the chapter.