The Hadoop in Real World team walks us through event streaming with ksql:
ksqlDB is an event streaming database that enables creating powerful stream processing applications on top of Apache Kafka by using the familiar SQL syntax, which is referred to as KSQL. This is a powerful concept that abstracts away much of the complexity of stream processing from the user. Business users or analysts with SQL background can query the complex data structures passing through kafka and get real-time insights. In this article, we are going to see how to set up ksqlDB and also look at important concepts in ksql and its usage.
Event streaming has become a lot easier over the past couple of years, as Kafka, Spark, and Flink have all matured.