What is the equivalent of creating MySQL indexes in Elasticsearch?

Question

As you probably know, in MySQL you can create indexes to improve the performance of your queries. Is there any such equivalent in Elastic? (I already know that an index is somewhat the equivalent of creating a database in Elastic)

I just need confirmation from black-belt Elastic users ;)

alpert · Accepted Answer · 2016-05-01 16:26:33Z

3

From the documentation:

Relational databases add an index, such as a B-tree index, to specific columns in order to improve the speed of data retrieval. Elasticsearch and Lucene use a structure called an inverted index for exactly the same purpose.

By default, every field in a document is indexed (has an inverted index) and thus is searchable. A field without an inverted index is not searchable. We discuss inverted indexes in more detail in Inverted Index.

answered May 1, 2016 at 16:26

alpert

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