elasticsearchWhat is Elasticsearch and how is it used?

Elasticsearch is an open source search engine built on Apache Lucene. It provides a distributed, multitenant-capable full-text search engine with a RESTful web interface and schema-free JSON documents. Elasticsearch is used for fast searches and analysis of large datasets.

Example code

PUT /my_index
{
  "settings": {
    "number_of_shards": 3,
    "number_of_replicas": 2
  }
}

Output example

{
  "acknowledged": true,
  "shards_acknowledged": true,
  "index": "my_index"
}

The code above creates an index named "my_index" with 3 primary shards and 2 replicas. The "number_of_shards" setting specifies the number of primary shards to create in the index, while the "number_of_replicas" setting specifies the number of replica shards to create.

Elasticsearch can be used for a variety of tasks, such as logging, full-text search, analytics, and data storage. It can be used to search large datasets quickly, and to analyze data with aggregations and analytics.

Helpful links

• Elasticsearch Documentation
• Elasticsearch Tutorial

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