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Oracle RDBMS + Neo4j: Fully Sync Relational and Graph Data
By Gabe Stanek & Stefan Kolmar , Neo4j Field Engineering Team | January 9, 2017 Using the Neo4j graph database doesn’t have to be opposed to your existing Oracle RDBMS infrastructure. In fact, the...
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Attivio Adds Financial Services Certification from Hortonworks
ByPaul Vasquez, January 4, 2017 Category: Governance, Risk & Compliance | Tags: Attivio Partners Hadoop As I’ve mentioned inprior blogs, the biggest use cases we see in Hadoop these days come from...
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Using Docker for Dev Environment Setup Automation
In this article, I show how Docker can help in setting up a runtime environment, set up a database with predefined data set, get it all together, and run it isolated on your machine. Let’s start with...
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N25 第四周作业
1、复制/etc/skel目录为/home/tuser1，要求/home/tuser1及其内部文件的属组和其它用户均没有任何访问权限。 2、编辑/etc/group文件，添加组hadoop。 3、手动编辑/etc/passwd文件新增一行，添加用户hadoop，其基本组ID为hadoop组的id号；其家目录为/home/hadoop。...
View ArticleHDB: Driving Better Customer Experiences in Mobile Network Services
Bob Glithero Analytics Product Marketing Manager, Pivotal Over the last five years, mobile network operators (MNOs) realized 15% lower compound revenue growth on average than other types of...
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Hadoop源码编译
如果大家直接在官方网站下载Hadoop 安装包，然后安装启动Hadoop集群，会报本地库找不到的警告，但是不影响集群的运行，警告如下所示： WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable...
View Article5 Ways to Be Successful with Open-Source Software: Hadoop Creator Doug...
Over the past year, we’ve seen open source technology make strong inroads into the mainstream of enterprise technology. Who would have thought that my work on Hadoop ten years ago would impact so many...
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Why Dataproc ― Google’s managed Hadoop and Spark offering is a game changer.
So far I’ve written articles on Google BigQuery ( 1 , 2 , 3 , 4 , 5 ), on cloud-native economics( 1 , 2 ), and even on ephemeral VMs ( 1 ). One product that really excites me is Google Cloud Dataproc...
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MongoDB ransacked: Now 27,000 databases hit in mass ransom attacks
Tens of thousands of poorly-configured MongoDB databases have been compromised over the past week, with attackers wiping data and demanding up to one bitcoin to return it. Victor Gevers, from...
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MongoDB ransomware attacks sign criminals are going after servers, applications
The tremendous success of ransomware infections over the past year showed cybercriminals that holding data for ransom is the key to making money from online attacks. Ransom-based attacks are evolving,...
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Over 27,000 MongoDB Databases Held For Ransom Within A Week
The ransomware attacks on poorly secured MongoDB installations have doubled in just a day. A hacker going by the handle Harak1r1 is accessing, copying and deleting unpatched or badly-configuredMongoDB...
View ArticleMongoDB Ransomware Impacts Over 10,000 Databases
(Other stories bySean Michael Kerner) Attackers are exploiting misconfigured open-source MongoDB databases and holding them for ransom. The ransomware attacks against MongoDB were first publicly...
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Massive ransomware attack takes out 27,000 MongoDB servers
Image: iStockphoto/merznatalia A recent string of ransomware attacks on MongoDB databases left roughly 27,000 servers compromised, with the attackers demanding up to 1 Bitcoin in exchange for the...
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Huge spike in ransomed MongoDB installs, doubled to over 27,000 in a day
In the span of a day, the number of MongoDB installations that were erased and replaced with ransom notes has more than doubled, spiking to 27,000 as more cyber thugs jump on the ransom bandwagon....
View ArticleIoT Asset Management Starter Kit
First demonstrated at Microsoft’s 2016 Ignite Conference in Atlanta, GA, the IoT Asset Management Starter Kit is a boiler plate project comprised of Node.js and Angular 2 that facilitates the quick...
View Articlewallet的使用 数据库 数据库学习 数据库知识 wallet教程
wallet的使用。wallet的作用哪就是无密码登陆oracle，相当于一个密钥，并且对于脚本登陆数据库来操作是特别有用的，并且存放起来也更加的完全，便于修改！下来在客户端创建一个wallet：用法：D:\app\Administrator\product\11.2.0\dbhome_1\BIN>mkstore –helpOracle Secret Store Tool: 版本...
View ArticleHibernate与Jpa的关系，终于弄懂 数据库 数据库学习 Hibernate Jpa
Hibernate与Jpa的关系，终于弄懂。我都知道Jpa是一种规范，而Hibernate是它的一种实现。除了Hibernate，还有EclipseLink(曾经的toplink)，OpenJPA等可供选择，所以使用Jpa的一个好处是，可以更换实现而不必改动太多代码。 在play中定义Model时，使用的是jpa的annotations，比如javax.persistence.Entity,...
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[ASP.NET]NOLOCK和ROWLOCK的使用经典解释 数据库 数据库学习 NOLOCK ROWLOCK
[ASP.NET]NOLOCK和ROWLOCK的使用经典解释。最近一年老是受到mssqlSERVER数据库阻塞的困扰，单表记录已突破400万条，除了分库似乎没有别的方法，使用分区存储，数据库又要重新设计，考虑到程序中使用较多的就是查询，而查询会受到更新与删除的影响，更新与删除引发的页面锁不光锁定正在修改的记录，还会有很多其它记录也会被锁定，会导致查询的阻塞，要加快一些查询的速度，我们可以使用nolo...
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Get the Big Data Mastery with Hadoop Bundle for just $46 via Neowin Deals
Today's highlighted deal comes from our Online Courses section of Neowin Deals, where you can save 92% off* the Big Data Mastery with Hadoop Bundle . Tame massive datasets with 44 hours of extensive...
View Article你真的懂redis吗？
缓存 我相信大部分互联网应用都是用redis作为缓存的，因为相对于memcached来说，redis的kv结构效率区别不大，并且还有hash这种方便的结构，并且redis还有持久化的能力，可以防止重启机器导致的数据丢失而造成数据击穿问题。 计数器 例如记录文章的点击数，用户每次访问文章就自增一。然后还可以利用自减操作来判断库存问题。由于是原子性操作，可以避免并发问题，而且性能很好。 队列...
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