聊聊Elasticsearch之Metric聚合

此篇文章简单的记录一下 elasticsearch的metric聚合操作。比如求 平均值、最大值、最小值、求和、总计、去重总计等。,根据 province进行terms聚合，然后获取每个terms聚合 age最大的那个文档。,,运行结果,https://gitee.com/huan1993/spring-cloud-parent/tree/master/es/es8-api/src/main/java/com/huan/es8/aggregations/metric,1、https://www.elastic.co/guide/en/elasticsearch/reference/7.17/search-aggregations-metrics-max-aggregation.html