CRUD Operations
Explore CRUD operations in Elasticsearch including creating and indexing documents with autogenerated or specified IDs, reading documents by ID, updating document fields without full reindexing, and deleting data. Learn how to use endpoints like _doc, _create, and _update effectively, and test your operations using the Kibana console for practical experience in managing Elasticsearch data.
We'll cover the following...
Create, read, update, and delete (CRUD) operations
Elasticsearch provides a set of APIs that allow users to perform various operations on the data, including create, read, update, and delete operations. These operations are crucial for managing data in Elasticsearch, and they enable users to add, retrieve, modify, and remove data from the index. In this context, it is important to understand the basics of these operations, how they work, and how to use them effectively to manipulate data in Elasticsearch.
We will create a movie index prior to explaining CRUD operations, so that we can use it to perform the required operations. The index will serve as the storage location for movie-related data and enable us to create, read, update, and delete information in Elasticsearch.
Note: It’s important to remember to test each request we create in the lesson by visiting the “Kibana widget” section at the end of the lesson.
The following request creates a movie index:
PUT movie
Creating (indexing) a document
The create operation in Elasticsearch is commonly known as indexing a document, and it refers to adding a new document to an index.
There are multiple ways to index a document in Elasticsearch:
- Indexing a document with an autogenerated ID
- Indexing a document with a specified ID
Indexing a document with an autogenerated ID
To index a document in Elasticsearch, one method is to allow Elasticsearch to generate an ID for the document automatically. When sending a request to index a document, ...