[DOCS] Warn about potential overhead of named queries (#91512)

elastic · Nov 14, 2022 · dceff3f · dceff3f
1 parent 6fc31d3
commit dceff3f
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/docs/reference/query-dsl/bool-query.asciidoc b/docs/reference/query-dsl/bool-query.asciidoc
@@ -169,3 +169,9 @@ GET /_search
   }
 }
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+
+NOTE: This functionality reruns each named query on every hit in a search
+response. Typically, this adds a small overhead to a request. However, using
+computationally expensive named queries on a large number of hits may add
+significant overhead. For example, named queries in combination with a
+`top_hits` aggregation on many buckets may lead to longer response times.