Simple use case with mongoDB and MySQL. The architecture and design was published by a company to speed up the application response time. Since slideshare doesn't allow me to edit the uploaded file, the original content can be find at https://docs.google.com/presentation/d/1qU0VQqLEIjumKTkywF_o-aKrMxs0BTPzGDK9Yg6GKWg/edit?usp=sharing.