The query speeds improve as, instead of instructing Elasticsearch to Get all the data matching... , you say Go there and get all the data matching... ( Fig 6 ). If you are querying data with multiple unique routing keys, this guarantees better or equivalent query performance as that of the default routing strategy (reducing the scatter and
Did you know that focusing on performance can actually HURT your performance? This paradox is known as “The Performance Paradox.” If you care about performance, you should understand it and act accordingly.