Book Image

Elasticsearch Indexing

By : Huseyin Akdogan
Book Image

Elasticsearch Indexing

By: Huseyin Akdogan

Overview of this book

Beginning with an overview of the way ElasticSearch stores data, you’ll begin to extend your knowledge to tackle indexing and mapping, and learn how to configure ElasticSearch to meet your users’ needs. You’ll then find out how to use analysis and analyzers for greater intelligence in how you organize and pull up search results – to guarantee that every search query is met with the relevant results! You’ll explore the anatomy of an ElasticSearch cluster, and learn how to set up configurations that give you optimum availability as well as scalability. Once you’ve learned how these elements work, you’ll find real-world solutions to help you improve indexing performance, as well as tips and guidance on safety so you can back up and restore data. Once you’ve learned each component outlined throughout, you will be confident that you can help to deliver an improved search experience – exactly what modern users demand and expect.
Table of Contents (15 chapters)
Elasticsearch Indexing
About the Author
About the Reviewer


In the Elasticsearch world (that is, in Lucene world), a document is the main entity and basic unit of user data.

As mentioned earlier, the document format is JSON. Documents consist of fields (that is, properties) and value pairs. Each field has a name and a type supporting existing data types. A field is stored physically in a type within an index as an element of a document that has a unique ID.

Now, let's send a document to Elasticsearch:

curl -XPOST localhost:9200/premierleague/topscorer -d '{
  "fullname": "Robin van Persie",
  "age": 32,
  "birthdate": "1983-08-06",
"current_club": "Fenerbahce SK"

As seen, we indexed the document without any preparation. Because Elasticsearch is schema-less, it does not request some definitions such as index, type, and field type before the indexing process.


We'll discuss the question, "Is the claim about 'Elasticsearch stands for the...