MapReduce Indexes
Dejan Miličić · Apress eBooks · 2022
The previous chapter demonstrated complete control over an index’s definition and life cycle. Map and MultiMap indexes were introduced, along with various ways to compute fields that can be used to filter and sort documents. This chapter will show how to perform grouping and aggregation in RavenDB. Concepts of MapReduce and MultiMapReduce indexes will be introduced, along with a way to materialize the content of the index into a new collection.