Stateless Processing Introduction

In this chapter, we’ll learn how to choose and use stateless operators. We will do so by designing, building, and running a complete end-to-end Kafka Streams stateless topology. To refresh our memory, when we talk about stateless operators, we refer to stream processors, which do not require knowledge of past records, i.e., each record is processed independently of previous records. In particular, we will be using the following Kafka Stream’s high-level domain-specific language (DSL) stateless operators:

• filter: This is an operator used to select which records should be further processed.

• map: ...