Transformation and processing

This is the heart of the NRT framework, where all the processing actually takes place, starting from data transformation to complex aggregation and other business operations.

The key technology options that are available here are Apache Storm, Apache Flink, and Apache Spark. We will be delving into each in detail in the coming chapters, but the following is a quick comparison of each of them.

The following figure depicts key aspects of all of these scalable, distributed, and highly available frameworks for easy comparison and assimilation: