If search is the most popular activity in Elasticsearch, building date histograms must be the second most popular. Why would you want to use a date histogram?Elasticsearch에서 검색이 가장 인기 있는 요소라면, 두 번째는 date(날짜) histogram을 만드는 것이다. 왜 date histogram을 사용할까?Imagine your data has a timestamp. It doesn’t matter what the data is—Apache log events, stock buy/sell transaction dates, baseball game times—anyt..