Technology Tip of the month

Elasticsearch Tokenizers - edge_ngram

The Tokenizers are used to split a string into a stream of tokens, gives a plus where your query will match better results while the user is providing more data.

The below example produces the following terms:
[as, ash, ashn, ashni, ashnik]

This ensure that partial words are available for matching in the index.

PUT index_name
{
  "settings": {
    "analysis": {
      "analyzer": {
        "my_analyzer": {
          "tokenizer": "my_tokenizer"
        }
      },
      "tokenizer": {
        "my_tokenizer": {
          "type": "ngram",
          "min_gram": 2,
          "max_gram": 6,
          "token_chars": [
            "letter",
            "digit"
          ]
        }
      }
    }
  }
}

POST index_name/_analyze
{
  "analyzer": "my_analyzer",
  "text": "Ashnik"
}

- Technical Tip by Monika Agrawal | Solutions Consultant, Ashnik