Hadoop周刊―第 174 期
Hadoop 周刊 第 174 期 启明星辰平台和大数据总体组编译 2016 年 6 月 12 日 Spark 峰会本周在旧金山召开，正如所料，本期周刊有大量关于 Apache Spark 的新闻、公告和版本发布。除 Spark 外，本期还有 Kafka 、 Cask 、 Ambari 方面的文章。在产品发布部分，有一年来 Apache Pig 首次版本更新，还一个为分布式系统设计的简洁新工具...
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Analyzing data in the Internet of Things
Tower Bridge traffic. (source: O'Reilly) . Introduction The Internet of Things (IoT) is growing quickly. More than 28 billion things will be connected to the Internet by 2020, according to the...
View ArticleSpring-Data的来历
预计阅读时间: 20 分钟 Spring Data 在保持Spring一致方式上，提供了模板代码和尽可能的让你垂直同各种NoSQL仓库进行交互。根据你的需要，你可以通过定义Spring Data接口的硬性编码风格，为你整个项目开发一种持久化逻辑。 从Spring Data域对象和仓库开始说起，我们要学习两种实现Spring queries（数据查询）方式：1.命名约束...
View Article简单搭建分布式文件存储数据库mongodb
tar zxf mongodb-linux-x86_64-2.2.6.tgz mv mongodb-linux-x86_64-2.2.6 /usr/local/mongodb 创建数据库文件夹与日志文件 mkdir /usr/local/mongodb/data touch /usr/local/mongodb/logs 3. 设置开机自启动...
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MongoDB的设计模式策略
原文： MongoDB Design Patterns 作者：Darel Lasrado 译者：仲培艺，关注数据库领域，纠错、寻求报道或者投稿请致邮：zhongpy@csdn.net。 MongoDB是一项通用工具，但它也并非完美。针对某些MongoDB不适用的场合，有时可选用设计模式来加以应对。...
View ArticleUsing a Cloudant API Key with Multiple Cloudant Databases and Accounts
If you use Cloudant's dashboard to generate API keys and assign permissions, you'd be forgiven for thinking that an API key can only be used for one database. However, that's just an unfortunate...
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Using OpenWhisk Outside IBM Bluemix
OpenWhisk is a fantastic addition to the IBM Bluemix ecosystem and to the constellation of cloud-ready, open-source software. At a recent meetup that the IBM Bluemix group organized in Austin, TX, I...
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Redux Authentication: Secure Your Application with Auth0
This article was peer reviewed by Peleke Sengstacke . Thanks to all of SitePoint’s peer reviewers for making SitePoint content the best it can be! Redux is all the rage in the React community and...
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Multi-Node Full Text Search in Couchbase 4.5 Beta
Scale out Full Text Search in Couchbase Server 4.5 Beta Couchbase Server 4.5 includes a new service, full text search (FTS) . In this blog, I'll talk about how FTS scales out across nodes, how to...
View ArticleTransactions with RocksDB
RocksDB has work-in-progress to support transactions via optimistic and pessimistic concurrency control . The features need more documentation but we have shared the API , additional code for...
View ArticleExcited about MongoDB Atlas
Yesterday I attended MongoDB World here in Manhattan. There was a huge turnout and excellent sessions but the most exciting part of the day for me was the announcement of MongoDB Atlas . Atlas is...
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Charting Neo4j 3.0
ByMichael Hunger, Developer Relations | June 3, 2016 Chart, Not Graph As you probably know, we people atNeo4j really want to discerngraph from charts. It’s too easy to mix the two up in spoken...
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OpenShift Ecosystem: Couchbase and OpenShift for Your NoSQL Applications
Couchbase Server is an open source, distributed NoSQL document-oriented database. It exposes a fast key-value store with managed cache for submillisecond data operations, purpose-built indexers for...
View Articleredis笔记（一）-string数据类型
一、概述： 字符串类型是Redis中最为基础的数据存储类型，它在Redis中是二进制安全的，这便意味着该类型可以接受任何格式的数据，如JPEG图像数据或Json对象描述信息等。在Redis中字符串类型的Value最多可以容纳的数据长度是512M。 二、相关命令列表： 命令原型 时间复杂度 返回值 命令描述 APPEND key value O(1) 追加后Value的长度...
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SQL中Round(),Floor(),Ceiling()函数的浅析 - Aquaris
SQL中Round(),Floor(),Ceiling()函数的浅析项目中的一个功能模块上用到了标量值函数，函数中又有ceiling()函数的用法，自己找了一些资料，对SQL中这几个函数做一个简单的记录，方便自己学习。有不足之处欢迎拍砖补充 1.round()函数遵循四舍五入原则，用于把数值字段舍入为指定的小数位数 2.floor(value)函数返回小于或等于指定值（value）的最小整数...
View Article5-2数据库设计
5-2数据库设计 tags:数据库 基本步骤 步骤: 1. 需求分析阶段 进行数据库设计首先必须准确了解与分析用户需求.需求分析是整个设计过程的基础,是最困难和最耗费时间的一步. 2. 概念结构设计阶段 概念设计是整个数据库设计的关键,它通过对用户需求进行综合、归纳与抽象,行程一个独立于具体数据库管理系统的概念模型....
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ElasticSearch同步MySql
ElasticSearch同步mysql的插件选择了elasticsearch-jdbc,理由是活跃度高，持续更新,最新版本兼容elasticsearch-2.3.3.一、下载...
View ArticlePartnering With AtScale to Bridge the Gap Between Business Users and Hadoop
Early this year, we announced our partnership with Pivotal and Syncsort, incorporating key technologies from the ecosystem to optimize the value from Hortonworks Connected Data Platforms. Today, I am...
View ArticleApache Spark integrated with Microsoft R Server for Hadoop
by Bill Jacobs,Microsoft Advanced Analytics Product Marketing They say that time is infinite. Seem to me data is fast becoming the same. Or perhaps it's becoming true that our thirst for speed is...
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A TDD Approach to Building a Todo API Using Node.js and MongoDB
Introduction Testing is an integral part of the software development process which helps improve the quality of the software. There are many types of testing involved like manual testing, integration...
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