The e-commerce microservices application discussed in the rest of this tutorial uses the following architecture:
products service: handles querying products from the database and returning them to the frontendorders service: handles validating and creating ordersorder history service: handles querying a customer's order historypayments service: handles processing orders for paymentdigital identity service: handles storing digital identity and calculating identity scoreapi gateway: unifies services under a single endpointmongodb/ postgresql: serves as the primary database, storing orders, order history, products, etc.redis: serves as the stream processor and caching databaseYou don't need to use MongoDB/ Postgresql as your primary database in the demo application; you can use other prisma supported databases as well. This is just an example.
