Kafka integration with Java Spring-boot: producer-consumer model

Services

• dog-rescuer (acts as a kafka producer)
• dog-adoption-center (acts as a kafka consumer)

Flow

• Dog-rescuer service creates a Dog POJO using java-faker and produces the created object to a Kafka topic (rescued-dogs-delivery) after every 2 minutes.
• Dog-adoption-center consumes the messages from the Kafka topic, parses it and saves it to it's in-memory DB.
• Dog-adoptiion-center exposes GET /dogs API to retreive all rescued dog records

---

Local Setup with Docker

• Install Java 17 (recommended to use SdkMan)

sdk install java 17-open

• Install Maven (recommended to use SdkMan)

sdk install maven

• Clone the repo

git clone https://github.com/hardikSinghBehl/kafka-java-spring-boot-poc.git

• Run the below command inside both services

mvn clean install

• Run the below commands to start docker containers

sudo docker-compose build

sudo docker-compose up -d

• Run the below command to stop docker containers

sudo docker-compose down

---

Sample Recording

kafka-producer-consumer-sample-recording-2.mov