An example lightweight event sourcing system for payments

Supports the following API operations:

• Deposit (account_number, amount)
• Withdraw (account_number, amount)
• Transfer (originator_account, beneficiary_account, amount)

In this example prohect, the operations payload transform to events and are published to a system of record (in this example, nats streaming).

The µservice consumes the events from the system of record, calculates the balance for each account and updates a state database

Running

Install Docker & Docker-Compose

Then:

git clone https://github.com/SharonU/test-app test-app
cd test-app
# start it up
docker-compose up

Open http://localhost:3000 (or {docker ip}:3000 on windows) to view it in the browser.