Data Partitioning Guidance

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Data Partitioning Guidance

在很多大规模的解决方案中,数据都是分成单独的分区,可以分别进行管理和访问的.而分割数据的策略必须仔细的斟酌才能够最大限度的提高效益,同时最大限度的减少不利影响.数据的分区可以极大的提升可扩展性,降低争用以及优化性能. 为何进行数据分区绝大多数的云应用和云服务都会将存储和检索数据作为其业务的一部分.而应用所使用的数据仓库的设计对于系统的性能,吞吐,扩展性都有着非常重要的影响.其中在大规模系统中常用的一种技术,就是对数据进行分区. 本文中所提到的数据分区,指的是物理上将数据分割成不同的数据仓库.这…

the hard problems when writing a great connector; type cohersion, data partitioning and data locality to name a few

http://rosslawley.co.uk/introducing-a-new=mongodb-spark-connector/…

Data Consistency Primer

云应用通常来说,使用的数据很多都是分散的,来自不同的数据仓库.在这种环境下,管理和保持数据一致性是很复杂的,无论是在并发跟可用性上都可能出问题.开发者有的时候就需要为了强一致性而牺牲可用性了.这也就意味着开发者需要需要针对应用最终一致性设计一些切面,并且意识到应用并不是所有的时刻都是完全数据一致的. 管理数据一致性每个web应用和服务都会使用到数据.这数据通常被用户和组织来做出商务决策的.因此,保证数据的正确和可用,就是数据一致性的要求.数据一致性表示的是所有的应用实例在任何时候的数据都是一致…

Cloud Design Patterns: Prescriptive Architecture Guidance for Cloud Applications

January 2014 Containing twenty-four design patterns and ten related guidance topics, this guide articulates the benefit of applying patterns by showing how each piece can fit into the big picture of cloud application architectures. It also discusses…

Event Sourcing Pattern 事件源模式

Use an append-only store to record the full series of events that describe actions taken on data in a domain, rather than storing just the current state, so that the store can be used to materialize the domain objects. This pattern can simplify tasks…

Command and Query Responsibility Segregation (CQRS) Pattern 命令和查询职责分离（CQRS）模式

Segregate operations that read data from operations that update data by using separate interfaces. This pattern can maximize performance, scalability, and security; support evolution of the system over time through higher flexibility; and prevent upd…

Event Sourcing pattern

Event Sourcing pattern Instead of storing just the current state of the data in a domain, use an append-only store to record the full series of actions taken on that data.The store acts as the system of record and can be used to materialize the domai…