doris on es 实现,列存,本地优先扫描,不排序(es 本身会排序,节省了很多计算开销),性能解决了,并且可以直接写sql了,不用写dsl了,扩展性,用户可以直接写sql了。中台必要的能力
更新场景,doris 更新不好,提升查询性能,需要做很多预计算,预计算需要有规则的。分析场景,维度跟指标要定义好,可以通过维度可以把指标预计算出来,画像场景,主键或者叫维度,更新大量是指标,查的时候要根据指标去查,某个年龄,金额大于xxx的,某个地域是xxx的人群是多少个,属性来查询。doris需要索引,排序,查询速度非常快,因为会预聚合,更新的结果应不应该在结果集中,性能会掉的很厉害,但是更新满足不了,
es 通过docid就可以更新了,性能一般,但是好歹是支持的。并且不影响读取。
ASF Member 相当于是基金会的“股东”,有董事会选举的投票权,也可以参与董事会竞选。ASF Member 也有权利决定是否接受一个新项目,主要关注 Apache 基金会本身的发展。ASF Member 通常要从 Contributor, Committer 等这些角色起步,逐步通过行动证明自己后,才可能被接受成为ASF Member。
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