What experience do you have with using MongoDB and how long have you worked with it?

I worked with MongoDB for several months, using it to store and process unstructured data in Java projects. My experience includes:

• Designing document schemas with flexibility and scalability in mind.
• Using the MongoDB driver for Java to perform CRUD operations.
• Optimizing queries with indexes.
• Working with aggregation functions for data analysis.

For example, in one project, I implemented storage for user profiles and activity history, which allowed for quick scaling of the application and easy modifications to the data structure without complex migrations.