How deeply does Kafka Streams in Action, Second Edition cover bootstrap server?

Defines single and comma-separated host-and-port forms, but does not detail subsequent cluster communication.

Bootstrap server

As explained in Kafka Streams in Action, Second Edition

bootstrap.servers is the Kafka client configuration containing one or more broker hostname-and-port endpoints used to establish an initial cluster connection.

A bootstrap server is a host-and-port endpoint that a Kafka client uses to establish an initial connection to a broker or Kafka cluster. The bootstrap.servers configuration accepts one endpoint during development or several comma-separated endpoints for production deployments. section 4.2.1 section 6.3.2

Configure the same connection concept across Kafka client types:

Set bootstrap.servers for KafkaProducer with a broker endpoint such as localhost:9092. section 4.2.1
Set bootstrap.servers for KafkaConsumer; provide either one host:port pair or a comma-separated list. section 4.3
Set StreamsConfig.BOOTSTRAP_SERVERS_CONFIG alongside application.id; both properties are required to start a Kafka Streams application. section 6.3.2

Kafka Streams connection

A minimal Streams configuration supplies an application identifier and one bootstrap endpoint: props.put(StreamsConfig.APPLICATION_ID_CONFIG, "yelling_app_id"); props.put(StreamsConfig.BOOTSTRAP_SERVERS_CONFIG, "localhost:9092"); Replace the single development endpoint with comma-separated broker endpoints when connecting to a production cluster. section 6.3.2 section 4.2.1

props.put(StreamsConfig.APPLICATION_ID_CONFIG, "yelling_app_id");
props.put(StreamsConfig.BOOTSTRAP_SERVERS_CONFIG, "localhost:9092");

Inspect the minimal Java properties required to identify a Kafka Streams application and establish its Kafka cluster connection. section 6.3.2

How Kafka Streams in Action, Second Edition covers it

Cover of Kafka Streams in Action, Second Edition

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Related concepts

Kafka clusterconfigures · A Kafka cluster is a group of Kafka brokers that collectively store, distribute, and serve event streams.
Kafka Streamsconfigures · Kafka Streams is a client library for building applications that continuously process data from and write data to Apache Kafka topics.
clientconfigures · A client is a person, organization, device, or software component that receives or uses a product, service, resource, or functionality provided by another entity.
producer settingconfigured by · A producer setting is a configuration property or object that controls a message producer's connections and behavior.
Kafka brokeruses · A Kafka broker is a server process in an Apache Kafka cluster that stores records and handles producer, consumer, and other client requests.
metadataproduces · Metadata is information that describes, identifies, or provides context about other data, resources, or artifacts.

This explainer was generated by Manning's knowledge graph from the text of Kafka Streams in Action, Second Edition. The section links point to the parts of the book it draws on.