https://ai-with-sudal-ee.tistory.com/6
Node base : https://www.plusdev.net/2023/03/04/building-a-recommendation-system-with-node-js-and-mongodb
https://velog.io/@jochedda/%EC%B6%94%EC%B2%9C-%EC%8B%9C%EC%8A%A4%ED%85%9C-%EC%B6%94%EC%B2%9C-%EC%95%8C%EA%B3%A0%EB%A6%AC%EC%A6%98-%EC%A2%85%EB%A5%98
aws personalize : https://aws.amazon.com/ko/personalize/pricing/
