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This is a java lagom application which has only kafka consumer implemented
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A Giter8 template for showcasing only consuming data from kafka topic using external kafka in Lagom framework.

Lagom Framework + Kafka Integration

This is a template which only consumes data from a topic using external kafka in Lagom framework. In this application, we have not created any producer. Producer will be external, this application will only consume the data.

Steps to install Zookeeper and Apache Kafka:

Step 1: Download Kafka

Download Kafka from here

Step 2: Extract downloaded file

tar -xzvf kafka_2.11-1.0.0.tgz
cd kafka_2.11-1.0.0

Steps to start Zookeeper and Kafka server :

Start Zookeeper:

bin/ config/

Start Kafka server:

bin/ config/

Clone Project

sbt new knoldus/lagom-kafka-consumer-only.g8
cd lagom-kafka-consumer-only
sbt clean compile

Run Application

sbt runAll

Steps to produce a message on kafka topic :

Step 1: Create topic

bin/ --create --zookeeper localhost:2181 --replication-factor 1 --partitions 1 --topic greetings

Step 2 : Send message

bin/ --broker-list localhost:9092 --topic greetings
{"message" : "HI"}

Application runs on port http://localhost:9000

Consume message from kafka topic

The application subscribes to the topic greeting and dump out messages to standard output. To verify, we need to check the console after producing message on kafka.

Written in 2017​ by Rishi Khandelwal

To the extent possible under law, the author(s) have dedicated all copyright and related and neighboring rights to this template to the public domain worldwide. This template is distributed without any warranty. See

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