Bool Query with multiple term queries inside should OR MultiSearch Queries

Elastic Stack Elasticsearch
1

I have bool query which is perfectly satisfying my request which is like:

GET product/product/_search?pretty
{
  "query" : {
    "bool": {
      "should": [
        {
          "term": {
            "field1" : "xxxx1"
          }
        },
        {
          "term" : {
            "field2" : "xxxx2"
          }
        },
        {
          "term" : {
            "field1" : "xxxx3"
          }
        }
      ]
    }
  }
}

I am thinking whether this will be faster or multisearch request like shown below.
But in multisearch request I need coagulate all responses if there responses with same document in it.
But in above, for e.g. I am getting 2 documents. This is what I require.
In case of multisearch, I will get 3 documents for each queries out of which two will be same, so I need to coagulate it using set on the key value from document.

My multi search request will be like:

curl -H "Content-Type: application/x-ndjson" -XGET localhost:9200/_msearch --data-binary "@request"

where request is

{"index":"product"}
{"query" : {"term" : {"field1" : "xxxx1"}}}
{"index":"product"}
{"query" : {"term" : {"field2" : "xxxx2"}}}
{"index":"product"}
{"query" : {"term" : {"field1" : "xxxx3"}}}
2

Bool queries should be reasonably fast. I would go with the first approach because it makes things simpler, especially if there is overlap between the matches of each should clause.

3

Just asking, are bool queries done in parallel in lucene, because I think its been done at lucene level.
Will it be faster if there is no overlap between matches?
or multisearch will be faster?

4

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