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Producing Kafka Messages with Confluent REST Proxy

Confluent provides even more ways to interact with Kafka, such as the Confluent REST Proxy. Confluent REST Proxy serves as a "RESTful interface" on top of your Kafka cluster. In this hands-on lab, you will have the opportunity to work with Confluent REST Proxy by using it to publish some messages to Kafka topics.

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Lab Info
Level
Intermediate
Last updated
Sep 15, 2025
Duration
30m

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Table of Contents
  1. Challenge

    Publish the Missing Records to the `inventory_purchases` Topic.
    1. Publish the records using an HTTP request to Confluent REST Proxy:
    curl -X POST -H "Content-Type: application/vnd.kafka.json.v2+json" 
      -H "Accept: application/vnd.kafka.v2+json" 
      --data '{"records":[{"key":"apples","value":"23"},{"key":"grapes","value":"160"}]}' 
      "http://localhost:8082/topics/inventory_purchases"
    
    1. We can verify that the data is in the topic with a console consumer:
    kafka-console-consumer --bootstrap-server localhost:9092 --topic inventory_purchases --from-beginning --property print.key=true
    
  2. Challenge

    Publish the Missing Records to the `member_signups` Topic.
    1. Publish the records using an HTTP request to Confluent REST Proxy:
    curl -X POST -H "Content-Type: application/vnd.kafka.json.v2+json" 
      -H "Accept: application/vnd.kafka.v2+json" 
      --data '{"records":[{"key":"77543","value":"Rosenberg, Willow"},{"key":"56878","value":"Giles, Rupert"}]}' 
      "http://localhost:8082/topics/member_signups"
    
    1. We can verify that the data is in the topic with a console consumer:
    kafka-console-consumer --bootstrap-server localhost:9092 --topic member_signups --from-beginning --property print.key=true
    
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