Cryptocurrency Rate Exchange Data Feed

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

• AWS ECS
• AWS Fargate
• AWS DynamoDB
• AWS Lambda
• serverless

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

System overview

system diagram here..

Monitor a new cryptocurrency

• 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

Remove a 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

Manage cryptocurrency feeds

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

TODO: expose this actions using http apis

Add a new cryptocurrency

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

Remove a cryptocurrency

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