Aggregation

In Chapter 6, Multi-Document ACID Transactions, we worked through two use cases of new transactional capabilities using the code for Ruby and Python. In this chapter, we will dive deeper into the aggregation framework, learning how it can be useful. Additionally, we will look at the aggregation operators that are supported by MongoDB.

Following that, we will learn about the time series collections, which were introduced in version 5 and greatly expanded in version 6. Next, we will learn about MongoDB views, which are similar to traditional database materialized views.

Finally, we will discuss the most major aggregation pipeline limitations and bring everything together with a sample aggregation use case.

To learn this information, we will use aggregations to process transaction data from the Ethereum blockchain. The complete source code is available at https://github.com/PacktPublishing/Mastering-MongoDB-6.x.

In this chapter, we will cover the following...