Model

www.msaez.io/#/storming/kafka-scaling

Before Running Services

Make sure there is a Kafka server running

cd kafka
docker-compose up

• Check the Kafka messages:

cd kafka
docker-compose exec -it kafka /bin/bash
cd /bin
./kafka-console-consumer --bootstrap-server localhost:9092 --topic

Run the backend micro-services

See the README.md files inside the each microservices directory:

• order
• delivery

Run API Gateway (Spring Gateway)

cd gateway
mvn spring-boot:run

Test by API

• order

 http :8088/orders id="id" productId="productId" productName="productName" qty="qty" customerId="customerId" address="address" 

• delivery

 http :8088/deliveries id="id" orderId="orderId" customerId="customerId" productId="productId" productName="productName" qty="qty" address="address" status="status" 

Run the frontend

cd frontend
npm i
npm run serve

Test by UI

Open a browser to localhost:8088

Required Utilities

• httpie (alternative for curl / POSTMAN) and network utils

sudo apt-get update
sudo apt-get install net-tools
sudo apt install iputils-ping
pip install httpie

• kubernetes utilities (kubectl)

curl -LO "https://dl.k8s.io/release/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl"
sudo install -o root -g root -m 0755 kubectl /usr/local/bin/kubectl

• aws cli (aws)

curl "https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip" -o "awscliv2.zip"
unzip awscliv2.zip
sudo ./aws/install

• eksctl

curl --silent --location "https://github.com/weaveworks/eksctl/releases/latest/download/eksctl_$(uname -s)_amd64.tar.gz" | tar xz -C /tmp
sudo mv /tmp/eksctl /usr/local/bin