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NoSQL vs RDBMS
This post will be looking into the differences and benefits of NoSQL databases in comparison to traditional databases. After exploring this a little in my previous post on Apache HBase I thought it...
View ArticleKaarel Moppel: Best of PostgreSQL 9.6 for the DBA
Last week a new PostgreSQL major version with the number 9.6 was released! Announcement, release notes and the official “What’s new” overview can be found here , here and here it’s highly recommended...
View ArticleStrata+Hadoop World and Trends
Last week, I gave two talks about Strata+Hadoop World. These talks covered some of the up and coming technologies in Big Data. I describe Strata as the Super Bowl of Big Data conferences. This is where...
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Servient and Hortonworks in Energy: Millions of Dollars Saved in Trading...
One the most enjoyable parts of my job is working with customers and partners who have innovated on the Hortonworks Connected Data Platform. Companies like Servient. Here’s a great real example of a...
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What is Data Preparation and understanding Vendor Capabilities
I guessed I missed the memo saying that ETL, Data Integration, and Data Quality are outdated terms (and technologies) and the new term used at least by Gartner and at O'Reilly Strata last week in NYC...
View Articlexredis-server 1.0 发布，Redis 服务器框架库
xredis-server 1.0 发布了。 xredis-server 是一个C++开发的redis服务器框架库，使用这个库可以很容易的开发自己的redis协议兼容服务器。 实现Redis服务端协议，支持auth认证命令. example: #include "../src/xRedisServerLib.h" class xRedisConnect :public...
View Article用Redis实现分布式锁
Redis有一系列的命令，特点是以NX结尾，NX是Not eXists的缩写，如SETNX命令就应该理解为：SET if Not eXists。这系列的命令非常有用，这里讲使用SETNX来实现分布式锁。 用SETNX实现分布式锁 利用SETNX非常简单地实现分布式锁。例如：某客户端要获得一个名字foo的锁，客户端使用下面的命令进行获取： SETNX lock.foo...
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Processing data in Hadoop
Building (source: Unsplash via Pixabay ). In the previous chapters we’ve covered considerations around modeling data in Hadoop and how to move datain and out of Hadoop. Once we have data loaded and...
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View from the CEO: A Vertica rollercoaster in Big Data analytics
Technology years are like dog years; with its pace of change the view of the world a matter of weeks ago can be distinctly different from the world as we experience it today. Taking last month as an...
View ArticleSqoop导入笔记
Sqoop 导入 1、通用参数 2、导入控制参数――选择部分数据导入 3、目的目录（HDFS） 4、分隔符 5、控制导入并行度 6、类型映射(导入到Hive时使用) 7、实战 1、 查看对应库、表情况 2、 密码 3、 导入全表 4、 指定导入目录 5、 控制并行度 6、 控制字段分隔符 7、 导入部分数据 8、 使用文件进行导入...
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Introducing Couchbase .NET SDK Core 2.4.0 DP1!
The new "hotness" in the Microsoft .NET world is .NET Core: an open source, cross platform (OSX, linux, and windows) implementation of the .NET framework. In an effort to provide the very best...
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To SQL or NoSQL
Knowledge and skills are key ― they both distinguish you from yourpeers Databases are a core tier of any modern application, yet they’re often neglected by IT professionals. Developers or Operations...
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Top 10 Tips for Scaling Hadoop
Data locality is about making sure a big data set is stored near the compute that performs the analytics. For Hadoop, that means managing DataNodes that provide storage for MapReduce to perform...
View ArticleMongoDB 入门指南
MongoDB 是一个开源的, 基于分布式文件存储的文档性数据库，由C++编写，旨在为WEB应用提供可拓展的高性能数据存储解决方案。 MongoDB 是一个介于关系数据库和非关系数据库之间的产品，是非关系数据库当中功能最丰富，最像关系数据库的。他支持的数据结构非常松散，是类似json的bson(Binary...
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使用Helm charts在Kubernetes 1.4 MongoDB上部署
有人说：“如果你觉得国庆7天短的话，那么接下来上班的7天你就知道有多长了【二哈】”，今天周一，照列来一波干货来袭，喜欢来收。 2016年9月26日发布Kubernetes 1.4版本，其中包括几项新的功能。一个有趣的是使用扩展的状态的应用支持 Helm Charts。在这篇文章中，我们将使用Kubernetes 1.4的这个新功能部署MongoDB实例来Kubernetes。 他们的博客公告：...
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Next-Generation Neo4j Hosting on AWS with GrapheneDB
ByAlberto Perdomo, Founder of GrapheneDB | October 11, 2016 GrapheneDB is a Bronze sponsor of GraphConnect San Francisco . Meet their team on October 13-14th at the Hyatt Regency SF. With the Neo4j...
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Planet-scale authentication with Auth0 and Azure DocumentDB
TL;DR:In this article you will learn how to integrate Auth0 with the fast and scalable Azure DocumentDB as a custom database connection and use it in your Auth0 applications. Auth0 offers a highly...
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Cloudera tells bright Sparks: Go teach yourselves Hadoop
Cloudera, presumably sick of paying its staff to train spies and their ilk, has decided to launch online courses for those wanting to familiarise themselves with Hadoop and Spark. The Palo Alto-based...
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25 Questions and Answers About Hortonworks DataFlow
Last week, we had a jam-packed webinar on Hortonworks DataFlow, with over 700 registrants and so we were unable to get back to everyone to answer their questions. We’ve grouped the questions (and...
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