Basic Kafka Demo

This repo contains a basic working demo of kafka with PHP. It contains a kafka-consumer folder and a kafka-producer folder. The kafka-consumer 'consumes' events and the kafka-producer, er-hum, produces them. These two containers share a network (kafka-shared) so that they can communicate with each-other.

Installation

1. Clone this repo
2. Navigate to the project root in your terminal
3. Run the consumer and producer containers (you may want to do this in different terminal windows)
   • cd kafka-consumer && docker-compose up
   • cd kafka-producer && docker-compose up

Usage

1. SSH onto the kafka-producer container and run a composer install:

   • docker exec -it kafka-producer /bin/bash
   • composer install

2. Send an event by running php index.php

3. In another terminal run kcat -C -K : -b kafka:9092 -t helloworld to see the event that you pushed from the producer container.

   (If you don't have kcat installed, run brew install kcat)

4. With kcat still running, head back over to your kafka-producer terminal and run php index.php again. You'll see another almost-identical event added to the queue.

5. Inspect the contents of the index.php file to see where the event came from.