Excellent! We have enjoyed learning about document APIs including how to store, retrieve, and manage documents in document-oriented Elasticsearch. We have delved into the document life cycle, and then we practiced the single document and multi-document APIs. Finally, we also completed the index rebuilding example for migrating indices from old versions to version 7.0.
In Chapter 4, Mapping APIs, we will drill down to the mapping APIs. A mapping in Elasticsearch is a description of how documents and their fields are stored and indexed. Although dynamic mapping is provided during indexing if you do not provide the mapping explicitly, in most cases you will still need to have your overall mapping designed properly for your search engine database. We will learn how and when to specify a custom mapping.
