More than just an e-commerce platform. GrandNode is the most advanced e-commerce platform at the market. MongoDB is a document database with the scalability and flexibility that you want with the querying and indexing that you need

Mongodb

MongoDB is a document database with the scalability and flexibility that you want with the querying and indexing that you need

MongoDB stores data in flexible, JSON-like documents, meaning fields can vary from document to document and data structure can be changed over time
The document model maps to the objects in your application code, making data easy to work with
Ad hoc queries, indexing, and real time aggregation provide powerful ways to access and analyze your data
MongoDB is a distributed database at its core, so high availability, horizontal scaling, and geographic distribution are built in and easy to use
MongoDB is free and open-source, published under the GNU Affero General Public License

In GrandNode basing on MongoDB result in a speed, performance, scalability, which does not guarantee its engine, nopCommerce. Use this new software in your shop will be able to function with much more products.