The fact that Elasticsearch operates with shards and replicas adds challenges when it comes to having good scoring. Elasticsearch가 shard, relpica와 함께 동작한다는 사실은 score 계산에 어려움이 있다는 것을 의미한다. Scores are not reproducible Say the same user runs the same request twice in a row and documents do not come back in the same order both times, this is a pretty bad experience isn’t it? Unfortunately this is so..