https://spoon-elastic.com/all-elastic-search-post/understanding-elastic/scoring-elasticsearch-query/
https://spoon-elastic.com/all-elastic-search-post/how-elasticsearch-and-spoon-consulting-enhance-data-usage-of-your-company/
https://spoon-elastic.com/all-elastic-search-post/simple-elastic-usage/denormalize-index-elasticsearch/