Cryptocurrency Rate Exchange Data Feed

This is a demo project to experiment with dynamic task scheduling on AWS ECS. Technologies used:

Uses Alpha Vantage apis to fetch live crypto currencies exchange rates.

System overview

system diagram here..

a new cryptocurrency to monitor is added as a new item in DynamoDB
a lambda attached to the DynamoDB stream will spawn a new crypto-feed task on an ECS cluster
the crypto-feed polls the Alpha Vantage api and emit live currency rate exchange events for that specific cryptocurrency

an existing cryptocurrency item is removed from DynamoDB
a lambda attached to the DynamoDB stream will remove the crypto-feed task from the ECS cluster

For now you can add/remove a cryptocurrency by creating/deleting an item on the dynamodb table.

TODO: expose this actions using http apis

aws dynamodb put-item --table-name crypto-exchange-feed-dev-cryptocurrency --item '{"Symbol": {"S": "BTC"}}'

aws dynamodb delete-item --table-name crypto-exchange-feed-dev-cryptocurrency --key '{"Symbol": {"S": "BTC"}}'