koa-graphql-mongodb
- https://medium.com/free-code-camp/how-to-setup-a-powerful-api-with-graphql-koa-and-mongodb-339cfae832a1
- https://medium.com/free-code-camp/how-to-set-up-a-powerful-api-with-graphql-koa-and-mongodb-crud-4459fc0720d4
- https://codeburst.io/how-to-set-up-a-powerful-api-with-graphql-koa-and-mongodb-scalability-and-testing-4447c3bf5925
- https://codeburst.io/how-to-set-up-a-powerful-api-with-graphql-koa-and-mongodb-deploying-to-production-349a94998718