How to properly organize data in an index in Elasticsearch?

Question

elasticsearch

Hello.
There is a certain entity with a characteristic that can have an arbitrary number of text values. For example:

"entity1": { "param": ["1", "2", "3"] }
"entity2": { "param": ["1", "2"] }

Search by characteristic values ​​is required (in the case of the example, by "param" values).
Tell me, how best to write data for searching in Elasticsearch? Put each value in ES as a separate entry? Or create some kind of structure? Or else how? Search speed is more important than indexing speed.

Answer 1

If these are just arrays of data, then it is enough to use the standard mapping for the field and the usual queries query term / terms.
Minimal mapping (ES 5.0+)

...
"param": {"type": "keyword"}
...

When filling in data, simply pass an array of values. You don't need to configure anything additionally.
Single Value Search (Sense Query Sample)

GET your_index/your_type/_search
{"query": {"term": {"param": {"value": "2"}}}}

Search by multiple values ​​(sample query for Sense)

GET your_index/your_type/_search
{"query": {"terms": {"param": ["2", "1"]}}}

Approximately like this.