Apache Kylin的实践与优化

{"type":"doc","content":[{"type":"heading","attrs":{"align":null,"level":2},"content":[{"type":"text","text":"背景"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"销售业务的特点是规模大、领域多、需求密。美团到店餐饮擎天销售系统（以下简称“擎天”）作为销售数据支持的主要载体，不仅涉及的范围较广，而且面临的技术场景也非常复杂（多组织层级数据展示及鉴权、超过1\/3的指标需要精准去重，峰值查询已经达到数万级别）。在这样的业务背景下，建设稳定高效的OLAP引擎，协助分析人员快速决策，已经成为到餐擎天的核心目标。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"link","attrs":{"href":"http:\/\/kylin.apache.org\/cn\/","title":"","type":null},"content":[{"type":"text","text":"Apache Kylin"}]},{"type":"text","text":"是一个基于Hadoop大数据平台打造的开源OLAP引擎，它采用了多维立方体预计算技术，利用空间换时间的方法，将查询速度提升至亚秒级别，极大地提高了数据分析的效率，并带来了便捷、灵活的查询功能。基于技术与业务匹配度，擎天于2016年采用Kylin作为OLAP引擎，接下来的几年里，这套系统高效地支撑了我们的数据分析体系。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}}]}