How to prioritize indices when querying multiple indexes in Elasticsearch?

Utilizing the Elasticsearch multi index API, I am able to query across multiple indices. However, it is important for me to prioritize my queries.

As an illustration, when querying in the indices index1 and index2, the syntax would look like:

/index1,index2/_searchq=yourQueryHere

My requirement is to have the query executed first on index2 before moving on to index1.

Answer №1

Your input suggests that the results should be weighted based on the source index. For instance, hits in index1 should hold more significance than hits from index2, perhaps by a factor of 3.

An interesting feature called index_boost enables you to construct multi-index queries with varying weights assigned to each source index.

GET /index1,index2/_search 
{
  "indices_boost" : [
    {"index1": 3.0}, 
    {"index2": 1.0}
  ], 
  "query": {...insert your query here...} 
}

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