In this chapter, we extended the MERN Marketplace application and explored how to add a shopping cart for buyers, a checkout process with credit card payments, and order management for the sellers in an online marketplace application.
We discovered how the MERN stack technologies can work well with third-party integrations as we implemented the cart checkout flow and processed credit card charges on ordered products using the tools provided by Stripe for managing online payments.
We also unlocked more of what is possible with MERN, such as optimized bulk write operations in MongoDB for updating multiple documents in response to a single API call. This allowed us to decrease the stock quantities of multiple products in one go, such as when a user placed an order for multiple products from different stores.
With these new approaches and implementations that we explored...