Use of Kafka in Microservices

curl --location 'http://localhost:9001/api/order' \
--header 'Content-Type: application/json' \
--data '{
    "orderLocation": "IND",
    "creditCardNumber": "1234567890",
    "items": [
        {
            "itemName": "iPhone 16",
            "price": 1000,
            "quantity": "10"
        }
    ]
}'