Wow! We have completed Chapter 2, Index APIs. In this chapter, we learned the basic APIs for managing indices, important settings, and index templates. We also went through a few practices of index aliases APIs. After some indices statistics were introduced to monitor, we experienced several advanced index management operations to improve performance issues.
In the next chapter, we'll delve into document APIs. Basically, Elasticsearch can be viewed as a document-oriented database designed to store, retrieve, and manage document-oriented data. First, we'll learn about single-document APIs, then multi-document APIs. Finally, we will look at a reindex example so that we can migrate indices from the old version of Elasticsearch to 7.0.
