elasticsearchHow can I implement a full text search using Elasticsearch?

Full text search using Elasticsearch can be implemented using the following steps:

1. Install Elasticsearch on the machine:

# Install Elasticsearch
$ sudo apt-get install elasticsearch

2. Configure the Elasticsearch instance:

# Configure the Elasticsearch instance
$ vi /etc/elasticsearch/elasticsearch.yml

3. Start the Elasticsearch instance:

# Start the Elasticsearch instance
$ service elasticsearch start

4. Create an index:

# Create an index
$ curl -XPUT localhost:9200/myindex

5. Index some documents:

# Index some documents
$ curl -XPUT 'localhost:9200/myindex/doc/1?pretty' -H 'Content-Type: application/json' -d'
{
  "title": "The quick brown fox",
  "text":  "The quick brown fox jumps over the lazy dog"
}'

6. Query the index:

# Query the index
$ curl -XGET 'localhost:9200/myindex/_search?q=quick&pretty'

7. Output:

# Output
{
  "took" : 3,
  "timed_out" : false,
  "_shards" : {
    "total" : 5,
    "successful" : 5,
    "skipped" : 0,
    "failed" : 0
  },
  "hits" : {
    "total" : {
      "value" : 1,
      "relation" : "eq"
    },
    "max_score" : 0.2876821,
    "hits" : [
      {
        "_index" : "myindex",
        "_type" : "doc",
        "_id" : "1",
        "_score" : 0.2876821,
        "_source" : {
          "title" : "The quick brown fox",
          "text" : "The quick brown fox jumps over the lazy dog"
        }
      }
    ]
  }
}

Helpful links

• Elasticsearch Documentation
• Elasticsearch Tutorial

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