smol: A URL Shortener implemented using AWS Services

smol is a simple URL shortener implemented using AWS services.

Arch

• There are 2 lambda functions:
  • register: takes a long URL and returns a short URL
  • redirect: redirects to the long URL
• All the urls are stored in a dynamodb table.
• Api Gateway is used to expose the lambda functions.
  • register: POST /
  • redirect: GET /{hash}

short_url is a truncated hashcode string generated by the lambda function. The hashcode is generated using the long URL and a random salt. The hash is stored in the dynamodb table along with the long URL.

Currently long url is not encrypted. But, eventually, it should be encrypted using AWS KMS.

Prerequisites

• AWS Account
• Custom Domain
• Node.js
• AWS CDK

Deployment

• setup AWS CDK
• create a .env file, copy the variables from .env.template and update the values
• run cdk synth
• run cdk deploy