Index Document

Lesson in the Elasticsearch Roadmap · Stage 4: Leaf vs Compound Queries

Last updated 14 September 2026

What is Index Document?

To add data to Elasticsearch, you use the Index API. This API lets you create a new document within a specific index. You need to specify the index name, a unique ID for the document (or let Elasticsearch generate one), and the document's content in JSON format. When you send this information to Elasticsearch via a PUT or POST request, it analyzes the data, indexes it, and makes it searchable.

Study this in the interactive course See the whole Elasticsearch roadmap

Free resources to learn Index Document

Official docsCreate a new document in the index
Official docsCreate or update a document in an index
VideoHow to index a document inside Elastic Search

Index Document: common questions

Can I learn Index Document in Hindi?

This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain Index Document in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.

Is this Index Document tutorial for beginners?

It is lesson 38 of 113 in the free Elasticsearch roadmap, in stage 4, Leaf vs Compound Queries. If you are new to Elasticsearch, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.