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One of the most important features of Elasticsearch is that it tries to get out of your way and let you start exploring your data as quickly as possible. To index a document, you don’t have to first create an index, define a mapping type, and define your fields — you can just index a document and the index, type, and fields will spring to life automatically:
The automatic detection and addition of new types and fields is called dynamic mapping. The dynamic mapping rules can be customised to suit your purposes with:
Index templates allow you to configure the default mappings, settings, aliases, and warmers for new indices, whether created automatically or explicitly.
Disabling automatic type creationedit
Automatic type creation can be disabled by setting the
false, either by setting the default value in the
config/elasticsearch.yml file, or per-index as an index setting: