按日期范围分组的Elasticsearch计数

是的,您可以使用 date_histogram 聚合,如下所示:

{
  "query": {
    "range": {
      "read_date": {
        "gte": "now-10d"
      }
    }
  },
  "aggs": {
    "byday": {
      "date_histogram": {
        "field": "read_date",
        "interval": "day"
      }
    }
  }
}

要接收过去10天的天数,每天您可以发布以下查询:

{
  "query": {
    "range": {
      "read_date": {
        "gte": "now-11d/d",
        "lte": "now-1d/d"
      }
    }
  },

    "aggs" : {
        "byDay" : {
            "date_histogram" : {
                "field" : "read_date",
                "calendar_interval" : "1d",
                "format" : "yyyy-MM-dd" 
            }
        }
    }
}

到以下Url:http://localhost:9200/Index_Name/Index_Type/_search?size=0

将大小设置为0可以避免执行搜索的获取阶段,从而提高请求的效率。看见 this elastic documentation 了解更多信息。