Text VS Keyword

I am going to set my string as not indexed by elastic via mapping. So I do not need ANY search, aggregation, etc, whatsoever for certain strings.

I just need the string to come out together with other data when I search for other data.

Would "keyword" or "text" be more efficient if I care about memory usage?


Keyword is the best for this.

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Thank you!

You should also set index: false in the mapping for these fields; this means that the field will not be indexed for search, but will still be stored as part of the _source document returned.


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