Apache Kafka

Apache Kafka is Publish-Subscribe messaging rethought as a distributed commit log.

http://kafka.apache.org/

Clients en Perl, Python, Node.js, C, C++, Scala ...: https://cwiki.apache.org/confluence/display/KAFKA/Clients

First steps with Kafka

see Quickstart

cd kafka

Launch Zookeeper

./bin/zookeeper-server-start.sh ./config/zookeeper.properties

Launch Kafka server

./bin/kafka-server-start.sh ./config/server.properties

Create a topic

./bin/kafka-topics.sh --create --zookeeper localhost:2181 --replication-factor 1 --partitions 1 --topic test

Launch Kafka console producer

./bin/kafka-console-producer.sh --broker-list localhost:2181 --topic test

Launch Kafka console consumer

./bin/kafka-console-consumer.sh --zookeeper localhost:2181 --topic test

Info on topic

./bin/kafka-topics.sh --describe --zookeeper localhost:2181 --topic test

Replicated topics

# config/server-1.properties:
    broker.id=1
    port=9093
    log.dir=/tmp/kafka-logs-1
<pre>

1. config/server-2.properties:

   broker.id=2
   port=9094
   log.dir=/tmp/kafka-logs-2

Launch extra servers

./bin/kafka-server-start.sh config/server-1.properties &
./bin/kafka-server-start.sh config/server-2.properties &

Create a replicated topic

./bin/kafka-topics.sh --create --zookeeper localhost:2181 --replication-factor 3 --partitions 1 --topic my-replicated-topic
./bin/kafka-topics.sh --describe --zookeeper localhost:2181 --topic my-replicated-topic

Stop all

Stop all

./bin/kafka-server-stop.sh
./bin/zookeeper-server-stop.sh

Extra

Launch Zookeeper shell

./bin/zookeeper-shell.sh localhost:2181