ElasticSearch Cookbook - Second Edition

Mapping base types

Using explicit mapping allows you to be faster when you start inserting data using a schema-less approach, without being concerned about the field types. Therefore, in order to achieve better results and performance when indexing, it's necessary to manually define a mapping.

Fine-tuning the mapping has some advantages, as follows:

• Reduces the size of the index on disk (disabling functionalities for custom fields)
• Indexes only interesting fields (a general boost to performance)
• Precooks data for a fast search or real-time analytics (such as aggregations)
• Correctly defines whether a field must be analyzed in multiple tokens or whether it should be considered as a single token

ElasticSearch also allows you to use base fields with a wide ...