Hadoop Summit 2016 North America in San Jose
The 8th Annual Hadoop Summit in San Jose is athree-day-event that will kick off on Tuesday June 28th and bring together Apache community leaders and key players under one roof. Attendees will...
View ArticleHadoop集群的权限控制
调研了好多文章，Hadoop的权限管理和控制都写的好复杂，还要借助第三方的认证，本人认为这些都太麻烦了。既然只是业务需要，不如搞个简单版本的。 直到看了这篇文章 基于Hadoop SLA认证机制实现权限控制 ，豁然开朗。 业务需求其实很简单：做好两个方面的权限控制就行了：一个是HDFS，另一个是Yarn。而这两个方面的权限是基于CentOS本身的用户及用户组概念的。 Hadoop...
View ArticleMapR Launches New Partner Program for Open Source Data Analytics
Converged data vendor MapR has launched a new global partner program for resellers and distributors to leverage the company's integrated data storage, processing and analytics platform. MapR, whose...
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EMC at Hadoop Summit San Jose 2016
Once again another Hadoop Summit conference is upon us and this time it is in San Jose and of course we will be attending. We will be in Booth # 703 and we have several sessions, Including a keynote...
View ArticleNew Study: Evaluating Apache HBase Performance on Modern Storage Media
For the first time, this new study byIntel software engineers analyzes the performance impact of using Apache HBase on various modern storage technologies. Asmore “fast” storage technologies (such as...
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Node-Data is now unique framework to support sql,nosql and graph in single...
What is Node-Data Node-Data is unique backend framework which provides a generic interface for sql , NoSQL and graph entities and creates generic rest level 3 endpoints along with data repositories . A...
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全站缓存时代
原则：动静分离，分级缓存，主动失效。 Web 开发中，接口会被分为以下几类： 纯静态页面。打死我都不会修改的页面。很长一段时间内，基本上不会修改。比如：关于我们。 纯动态页面。实时性，个性化要求比较高。页面变化很大，或者每个用户看到的都不一样，比如：朋友圈。 短时静态页面。在一定时间内基本不会变化，或者是容忍不需要实时更新。比如：文章、新闻。...
View ArticleUsing Spring Data Couchbase in a CDI Application
If you are in the JEE space and want a modern data management layer for your NoSql applications, you might find yourself quickly limited. There are some interesting projects like Hibernate OGM or...
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Designing RavenDB’s debug log system
I have talked before about the roles of logs (for debug statements) in RavenDB. In this post, I want to start talking about the actual concrete design we have of them. Overall guidelines (in no...
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Cassandra Firewall Ports
Cassandra Firewall Ports Tags :Cassandra firewall port Category :Knowledge Get Social! Cassandra uses various ports for communication, either server to server communication or client to server...
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Digging Deeper into YCSB Benchmark with Couchbase Server 4.5
Every benchmark raises few question marks as it answers some. So with every benchmark,you need to sift through the data yourself to get the full scoop. I have been benchmarking for awhile starting at...
View ArticleMirage and MongoDB, Part 3: Deep Dive
By Yan Aksenfeld, Member of Technical Staff, VMware This 4-part series discusses the addition of MongoDB toMirage. Part 1 introduced the benefits of adding MongoDB to Mirage to enhance the performance...
View ArticleAmazon’s ‘RedShift’ Has Momentum, Says CLSA; Here Come Microsoft, Google
By Tiernan Ray Database vendors such as Oracle (ORCL), IBM (IBM) and Teradata (TDC) have been losing business to Amazon.com (AMZN), writes CLSA ’s Ed Maguire today, as a result of stunning growth in...
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Improved GIF Tagging
Tumblr receives a massive daily volume of gifs. We can only associate gifs with metadata from the post, rather than the gif itself, which presents a tricky technical question: how should this gif be...
View ArticleTuning Redis for extra Magento performance
Using Redis is a quick & easy way to improve Magento performance. Setting it up is easy, performance benefits are great, and we never had problems with it it’s fire and forget. Inchoo already...
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MongoDB finally takes cloud into its own hands with launch of Atlas
MongoDB, one of the leading players in the NoSQL space , has announced the launch of its own cloud database-as-a-service offering at its annual user conference in New York this week. The company hopes...
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MongoDB launches Atlas, its new database-as-a-service offering
MongoDB , the company behind the eponymous open source database, is launching Atlas today, its third major revenue-generating service. Atlas is MongoDB’s database-as-a-service offering that provides...
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The 5-Minute Interview: Dan Murphy, Senior Metadata DevOps at the Financial...
ByBryce Merkl Sasaki, Aspiring Graphista | June 1, 2016 For this week’s 5-Minute Interview, I sat down with Dan Murphy , the Senior Developer for Semantic Metadata and DevOps at the Financial Times ....
View ArticleRedis启动警告错误解决
分类：NoSQL 时间： 2015年7月13日 在前面我们讲解了linux下Redis的安装和php安装Redis扩展，在运用redis的时候难免会遇到一些报错的信息。下面PHP程序员雷雪松介绍下Redis 常见错误的解决办法。 1.WARNING overcommit_memory is set to 0! Background save may fail under low memory...
View ArticleTop 10 Questions about Apache Spark on the MapR Data Platform
In the last few weeks, we’ve seen a lot of activity and momentum centered on Apache Spark . At the Spark Summit in San Francisco, we announced an enterprise-grade Spark distribution that runs on the...
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