Task

You are working at COMPANY_NAME and your team is asked to build a microservice that will calculate real-time statistics of item sales on COMPANY_NAME marketplace platform. This microservice will feed data to a dashboard installed in a business team’s room. The microservice shall have a REST interface with two endpoints. The first endpoint will be called by the checkout service whenever a new payment is received and the second endpoint will provide statistics about the total order amount and average amount per order for the last 60 seconds. (Orders between t and t - 60 sec, given t = request time)

Specifications for the requested endpoints are as follows:

Transactions

URL: /sales PORT: 8780 Method: POST Content-Type: application/x-www-form-urlencoded Parameters: Name Required Type sales_amount Yes Number String (e.g. “10.00”) Return HTTP Code: 202 Accepted Return Body: blank

Statistics

URL: /statistics PORT: 8780 Method: GET Parameters: none Return HTTP Code: 200 OK Return Body: { “total_sales_amount”: “1000000.00”, “average_amount_per_order”: “45.04” }

Structure

Project contain two services:

• average-amount-counter
• sales-generator

average-amount-counter

Main service receive info and count statistic

sales-generator

Emulate sales per 70ms with random amount

Start

./gradlew clean build && sudo docker-compose up --build