elasticsearchHow do I explain Elasticsearch to a beginner?
Elasticsearch is a powerful open-source search engine built on top of Apache Lucene. It is a distributed, RESTful search and analytics engine capable of solving a growing number of use cases.
Elasticsearch provides a distributed, multitenant-capable full-text search engine with an HTTP web interface and schema-free JSON documents. It stores and indexes data using a document-oriented data model, making it easier to search and analyze data quickly.
Example code
GET /my_index/_search
{
"query": {
"match_all": {}
}
}
Output example
{
"took": 3,
"timed_out": false,
"_shards": {
"total": 5,
"successful": 5,
"skipped": 0,
"failed": 0
},
"hits": {
"total": {
"value": 2,
"relation": "eq"
},
"max_score": null,
"hits": [
{
"_index": "my_index",
"_type": "_doc",
"_id": "1",
"_score": null,
"_source": {
"title": "My first document",
"text": "This is my first document"
}
},
{
"_index": "my_index",
"_type": "_doc",
"_id": "2",
"_score": null,
"_source": {
"title": "My second document",
"text": "This is my second document"
}
}
]
}
}
Code explanation
GET
: This is the HTTP method used for the request./my_index/_search
: This is the Elasticsearch endpoint for running searches.query
: This is the query object which contains the query to be executed.match_all
: This is the query type used to match all documents in the index.
Helpful links
More of Elasticsearch
- How can I use Elasticsearch and ZFS together?
- How can I use Elasticsearch and Zabbix together for software development?
- How can I use Elasticsearch and Zookeeper together to manage distributed applications?
- How can I use YouTube to learn about Elasticsearch?
- How can I check the status of a yellow index in Elasticsearch?
- How do I set up an Elasticsearch Yum repository?
- How can I use Yandex Mirror to access Elasticsearch data?
- How can I use Elasticsearch to diagnose "yellow" issues?
- How do I find the best book about Elasticsearch?
- How can I use elasticsearch zone awareness to improve my software development?
See more codes...