Taken 📷

Taken is a Website screenshot taker which takes the url as input and provide the image of the website. An event driven arthitecture is used to handle up a load of 1k requests per second.

Technologies Used

• TypeScript
• Nodejs
• Postgres
• Typeorm
• Redis
• BullMQ
• SocketIO

Getting Started

• Change connection settings in typeorm.config.json file located in root project directory

npm install
# or
yarn install

npm run build
# or
yarn build


# Normal start: one server
npm start
#or
yarn start


# Deployment Start: Cluster
npm run start:cluster
#or
yarn start:cluster

How?

• Each request will be registered in redis job queue
• Workers process and serve the job asynchronously from the queue
• A workers is operating a squence of service:
  • Image Capture: uses puppeteer as core as headless driver driver for screenshoting
  • Image Save: uses Postgress database to save the image binary in bytea
• Displaying the image in a html template on get request
• Load test has been tested using k6 with 1500 virtual user requesting the server in the save time
• It could Run as of clustered pool of server workers ensuring our app is a bullet proof!