2-realtime-feed

Realtime Feed

This example features a very busy blogging platform, with thousands of messages showing up on your feed.

There are two separate applications (microservices) integrating over a Kafka topic. The producer generates thousands of "posts" and publishes them to the topic. The consumer subscribes to this topic and displays each post on the standard output.

The consumer has a throttling middleware enabled, so you have a chance to actually read the posts.

To understand the background and internals, see getting started guide.

Requirements

To run this example you will need Docker and docker-compose installed. See the installation guide.

Running

docker-compose up

You should see the live feed of posts on the standard output.

Exercises

1. Peek into the posts counter published on posts_count topic.

docker-compose exec kafka kafka-console-consumer --bootstrap-server localhost:9092 --topic posts_count

2. Add a persistent storage for incoming posts in the consumer service, instead of displaying them. Consider using the SQL Publisher.