Serverless Cryptocurrency Price Monitor

Linkedin: https://www.linkedin.com/in/walldba/

Index

• About
• Diagram
• Usage
• Technologies

About

This app was built to monitor a cryptocurrency price and send a notification if the price had an oscillation. To create this solution, I used Serverless Framework, AWS Lambda, DynamoDB and SES. To avoid unnecessary charges on AWS, I chose use the Localstack to simulate AWS environment offline.

Diagram

Usage

To run on development:

To install all packages use the command:

yarn install

To simulate AWS enviromennt offline using localstack:

docker compose up -d

To create the dynamoDb tables:

bash ./scripts/create-db-table.sh

To invoke functions locally:

yarn invoke:getPrice
yarn invoke:sendNotification

To run on Serverless Framework:

• Configure AWS envinments:

  • AWS config file:

    [default]
    region=us-east-1
    output=json
    

  • AWS credentials file:

    [default]
    aws_access_key_id=<YOUR_AWS_ACCESS_KEY>
    aws_secret_access_key=<YOUR_AWS_SECRET_ACCESS_KEY>
    
    

To deploy functions:

sls deploy

Technologies

• Serveless Framework
• Localstack