不爲也 比不能也

As fast as Elasticsearch is, it can be faster still. Combining multiple requests into one avoids the network overhead of processing each request individually. If you know that you need to retrieve multiple documents from Elasticsearch, it is faster to retrieve them all in a single request by using the multi-get, or mget, API, instead of document by document.Elasticsearch가 빠른 만큼, 여전히 더 빨라질 수 있다. ..

The patterns for the mget and bulk APIs are similar to those for individual documents. The difference is that the coordinating node knows in which shard each document lives. It breaks up the multidocument request into a multidocument request per shard, and forwards these in parallel to each participating node.mget 이나 bulk API의 형태는 개별 document의 그것과 유사하다. coordinating node는 document가 어느 shard에 있는지..