Abstract: ClickHouse is a high-performance, open-source online analysis columnar database management system open sourced by the Russian company Yandex in 2016. After the open source, with excellent analysis performance, excellent linear scalability and rich functions, it is recognized by the industry as a dark horse of the OLAP open source engine in the real-time analysis field.
This article is shared from the HUAWEI cloud community " Cloud Atlas | A dark horse of the OLAP open source engine, ClickHouse MRS cluster component", the original author: Reading Fengyun.
ClickHouse is an open source column database for online analysis and processing. It has a high data compression ratio. Based on multi-core parallel computing, vectorized execution and SIMD, it has excellent performance. ClickHouse uses Zookeeper to implement a replica mechanism through the Replicated series of engines. The design of the replica mechanism can minimize network data transmission and is used to synchronize in different data centers, so it can also be used to build multiple data centers and multiple activities in different places. Cluster architecture. Provides linear expansion capabilities through fragmentation and distributed table mechanisms. At present, ClickHouse is widely used in many fields such as Internet advertising, App and Web traffic, telecommunications, finance, Internet of Things, etc. It is very suitable for business intelligence application scenarios, and has a large number of applications and practices at home and abroad.
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