Document Updates
Updating a document in Elasticsearch can be done using the _update API. This allows you to modify the fields of an existing document without reindexing the entire document.
Example: Updating a Document
Assume we have an index called myindex with a document representing a user.
Step 1: Indexing a Document
First, let’s index a sample document:
curl -X POST "http://localhost:9200/myindex/_doc/1" -H 'Content-Type: application/json' -d'
{
"name": "John Doe",
"age": 30,
"city": "New York"
}'
Step 2: Updating the Document
Now, let’s update the age of John Doe:
curl -X POST "http://localhost:9200/myindex/_update/1" -H 'Content-Type: application/json' -d'
{
"doc": {
"age": 31
}
}'
Output:
The response will indicate the success of the update operation:
{
"_index": "myindex",
"_id": "1",
"_version": 2,
"result": "updated",
"_shards": {
"total": 2,
"successful": 1,
"failed": 0
}
}
The document’s version has increased, indicating it has been updated.
Handling Document Updates, Deletes, and Upserts in ElasticsearchHandling Document Updates, Deletes, and Upserts in Elasticsearch: Best Practices
Elasticsearch is a robust search engine widely used for its scalability and powerful search capabilities. Beyond simple indexing and querying, it offers sophisticated operations for handling document updates, deletes, and upserts. This article will explore these operations in detail, providing easy-to-understand examples to help you get started.
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