Which Java library is KSQL based on?

Which Java library is KSQL based on?

• A. Kafka Streams
• B. KStreams
• C. Spark Streaming
• D. Flink

Answer: (B)

KSQL runs on top of the Kafka Streams Java library. Kafka Streams provides the real-time processing engine with a Java DSL for building stream applications on Kafka, exposing concepts like KStream and KTable. When you write KSQL, its statements are translated into Kafka Streams topology that operates on those streaming abstractions, letting it process data continuously and, if needed, maintain state. Spark Streaming and Flink are separate stream-processing frameworks and aren’t the runtime for KSQL. The term KStreams is sometimes used informally to refer to the streaming API within Kafka Streams (the KStream interface), but the actual library KSQL depends on is Kafka Streams.

KSQL runs on top of the Kafka Streams Java library. Kafka Streams provides the real-time processing engine with a Java DSL for building stream applications on Kafka, exposing concepts like KStream and KTable. When you write KSQL, its statements are translated into Kafka Streams topology that operates on those streaming abstractions, letting it process data continuously and, if needed, maintain state. Spark Streaming and Flink are separate stream-processing frameworks and aren’t the runtime for KSQL. The term KStreams is sometimes used informally to refer to the streaming API within Kafka Streams (the KStream interface), but the actual library KSQL depends on is Kafka Streams.