实时计算 Flink版张维的相关内容

问答 2024-07-31 来自：开发者社区

在Flink CDC中，平常这种实时表和多张维表的复杂join是怎么做的？

问答 2024-03-14 来自：开发者社区

Flink cdc3.0 支持变化的表和多张维表 join 了吗？

问答 2024-02-25 来自：开发者社区

Flink cdc3.0 支持变化的表和多张维表 join 了吗？

有4张表left join成一张表，每张表变化都要查其他几张表的历史数据，这种情况 flink cdc3.0支持吗？之前的2.x版本问过好像不支持。有关联的字段，但是主键不相同怎么做啊？另外字段不同的多张表合并成一张大宽表，如果相同的主键怎么做？

问答 2023-09-28 来自：开发者社区

大佬们知道Flink 采用lookup join 3张维表第一二张表on条件和主表等值？

大佬们知道Flink 采用lookup join 3张维表第一二张表on条件和主表等值，第三张表和第二张表字段等值，这样写有什么不妥？第三张加上for system和不加有区别？

问答 2023-07-26 来自：开发者社区

Flink CDC中一张流表去关联多张维表的这效率太差，几分钟才跑了几千条，这怎么优化呀？

"问题1：Flink CDC中一张流表去关联多张维表的这效率太差，几分钟才跑了几千条，这怎么优化呀？其实我一张流表关联六张维表，而且数据都是一对一的，设置缓存也没用，全当流表效率很高，但是内存不够。当维表效率太差了。每张表都是一千万数据。我本来都是流表，只是流表join会全部加载到内存里，内存不够用。所以就改成流表关联维表。七张表各有一千万数据，都是一对一关联的，从MySQL库同步到starro....

问答 2023-07-26 来自：开发者社区

Flink CDC中，如果要join多张维表，for system-time as of要写多次？

Flink CDC中，如果要join多张维表，那个for system-time as of也是要写多次？

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更新时间 2024-08-01 13:23:53

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实时计算Flink版

阿里云实时计算Flink版(Alibaba Cloud Realtime Compute)，完全兼容开源的Apache Flink，比开源性能提升2～3倍，提供了完整的告警、监控、日志的解决方案、提升开发效率且无运维成本，并有社区专家提供技术支持。

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实时同步

MySQL 到 Hologres

Kafka 到 Hologres

功能对比

开源Flink对比

成本优化

作业自动调优