Designing Data-Intensive Applications的笔记(18)

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  • 硅胶鱼

    硅胶鱼 (才没有拖延症!人家只是惰性求值!)

    分布式数据系统 真•big picture 本书12章节, 每章开头都有一副手绘的地图, 标识了本章内容以及和其他章节的联系. 作者的blog (https://martin.kleppmann.com/2017/03/15/map-distributed-data-systems.html)贴出了完整的地图.   (1回应)

    2018-05-27 16:04   1人喜欢

  • 红色有角F叔

    红色有角F叔 (次元の呪い)

    SSI is fairly new: it was first described in 2008 [40] and is the subject of Michael Cahill's PhD thesis. ... it has the possibility of being fast enough to become the enw default in the future. Detecting writes that affect prior reads (the write occurs after the read). SI 只跟踪活跃的写集合,而 SSI 需要跟踪活跃的读集合。commit 时冲突探测,判断事务的写操作是否影响到其他事务的读集合,如果影响到...

    2018-05-13 10:56   1人喜欢

  • 啊声

    啊声

    2017-04-21 21:59   1人喜欢

  • stallboy

    stallboy (信念即自我实现预言)

    2018-11-25 01:18

  • Collapse

    Collapse (Viva la vida)

    软件系统需要考虑的三点: 1. Reliability 可靠性 2. Scalability 伸缩性 3. Maintainability 可维护性 可靠性 1. 功能如用户预期 2. 能够容忍用户出错或非预期的使用方式 3. 在预期的负载和数据量下,性能满足用户场景 4. 拒绝未授权访问,防止滥用 真 · 客户第一

    2018-08-06 00:01

  • Collapse

    Collapse (Viva la vida)

    The Internet was done so well that most people think of it as a natural resource like the Pacific Ocean, rather than something that was man-made. When was the last time a technology with a scale like that was so error-free? Alan Kay 的整个访谈要找时间专门去看下 主要限制 数据密集型:数据量、数据复杂度、数据变化的速度 计算密集型:CPU 的算力 数据密集型应用的部分组件: 1. 数据库:存储数据 2. 缓存:...

    2018-08-05 23:43

  • Collapse

    Collapse (Viva la vida)

    分布式系统发展的动力: 1. 互联网巨头们需要处理规模巨大的数据和流量 2. 商业模式变得敏捷,需要低成本地尝试某个想法;反应要迅速,模型要 flexible 3. 开源软件大获成功 4. 摩尔定律渐渐失效,并行变成一种趋势 5. 分布式系统构建的成本降低,得益于类似 AWS 这样的服务商 6. 越来越多的服务需要高可用

    2018-08-05 23:28

  • Collapse

    Collapse (Viva la vida)

    ...most people who write code for money. They have no idea where [their culture came from].

    2018-08-05 23:26

  • 萨摩风G-virus

    萨摩风G-virus (自然体,平常心)

    However, in the move to dis‐ tributed (replicated and partitioned) databases, many systems have abandoned them, claiming that transactions are too expensive in terms of performance and availability, and asserting that eventual consistency is inevitable in a scalable system. There is some truth in that statement, but it is overly simplistic, and we will develop a more nuanced view over the cour...

    2018-07-23 13:47

  • 杜晓东

    杜晓东

    不能随机写的原因: 1、连续写最快,所以如果是磁盘,必须连续写 2、连续写会让已写的老数据天生抗灾,以及天生支持并发读

    2018-07-15 17:29

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Designing Data-Intensive Applications

>Designing Data-Intensive Applications