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For the past two years, I’ve been working full time at FunBox as an Erlang developer . I’ve learned so much during that time - the Erlang language itself and the tooling (observer, recon andothers),...
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Mark Needham: Neo4j: Find the midpoint between two lat/longs
Over the last couple of weekends I’ve been playing around with some transport data and I wanted to run the A* algorithm to find the quickest route between two stations. The A* algorithm takes an...
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WOT讲师赵强：Redis高性能缓存及持久化
【51CTO.com原创稿件】WOT2016大数据峰会将于2016年11月25-26日在北京粤财JW万豪酒店召开，届时，数十位大数据领域一线专家、数据技术先行者将齐聚现场，在围绕机器学习、实时计算、系统架构、NoSQL技术实践等前沿技术话题展开深度交流和沟通探讨的同时，分享大数据领域最新实践和最热门的行业应用。...
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Docker and Neo4j for Developers Who Can’t Read Good and Want to Do Other...
TL;DR If you don’t feel like reading and just want a script to spin up a Docker instance with Neo4j that has the right ports open, as well as logs and data persisted outside of the container: docker...
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Edge Intelligence for IoT with Apache MiNiFi
MiNiFI is a subproject of NiFi designed to solve the difficulties of managing and transmitting data feeds to and from the source of origin, often the first/last mile of digital signal, enabling edge...
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Jean-Jerome Schmidt: Deploying and Monitoring MySQL and MongoDB clusters in...
NinesControl is a new service from Severalnines which helps you deploy mysql Galera and MongoDB clusters in the cloud. In this blog post we will show you how you can easily deploy and monitor your...
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Jean-Jerome Schmidt: Announcing NinesControl: helping MongoDB and MySQL...
Today we’re happy to announce our new product, NinesControl . Built on the capabilities of the popularClusterControl, NinesControl is a database management cloud service that enables developers to...
View ArticleDataStax slurps DataScale, burps out own managed cloud
NoSQL-business DataStax has today announced its acquisition of the similarly-named DataScale, as well as plans to launch its own managed cloud offering next year. DataStax'a Martin Van Ryswyk, EVP of...
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如何立足Hadoop成功建立商务智能：七项必备诀窍
在企业实施Hadoop技术时，其中的顶级用例无疑在于商务智能(简称BI)。根据新近发布的一项基准调查结果，我们整理出最适用于处理各类工作负载的几款HadoopSQL引擎。下面，我们一起来看： 1. 不存在万试万灵的选项 Complex Queries AtScale's Klahr warns that, while Impala and Presto do well on concurrency,...
View Article初学hadoop的心路历程
在学习hadoop之前，我就明确了要致力于大数据行业,成为优秀的大数据研发工程师的目标，有了大目标之后要分几步走，然后每一步不断细分，采用大事化小的方法去学习hadoop。下面开始叙述我是如何初学hadoop的。 Hadoop学习两步走:linux学习、hadoop学习。...
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[YARN] FairScheduler的资源分配机制分析(一)
以下是队列资源分配的简单架构 调度器的container资源分配 通过简图可以看出，container是分配是随着每一次nodeupdate而进行资源分配的，在每一次尝试调度container之前，首先会检查改节点是否曾经有预留的app(预留指的是该node曾经因为资源不足，为了提高本地性原因，当节点有资源更新时，优先的把这个节点的资源分配给这个app的策略) //...
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Integrate Neo4j with Apache Zeppelin
This autumn I’ve attended couple of conferences. It’s always interesting to learn about new tools popping up. One that took my attention is Apache Zeppelin . Zeppelin is a notebook style application...
View ArticleDataStax acquires DataScale to provide managed cloud solutions
Database software provider DataStax today announced the acquisition of DataScale , a cloud-based management services company for data infrastructure. The company also announced the forthcoming...
View ArticleMongoDB: Getting counts using aggregate and group methods
An aggregation operation computes a single value from a collection of values. An example of an aggregation operation is counting the occurrence of a number in list of numbers. MongoDB provides a rich...
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MongoDB's CEO: Expect aggressive investing as biz aims at Oracle et al
InterviewDev Ittycheria, chief executive and president at MongoDB, took a moment out from the company's European event to tell The Register about its strategy for the future. The NoSQL business is...
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10 Paths To Learning The Best Data Tools For Your Career
Learning new data tools could increase your worth and salary. But the best choice depends on which tools you already know. Here's a look at which ones to add to your tool kit next. 1 of 11 (Image:...
View ArticleAre Your DBA Tasks Changing?
I came across thisblog post, in it Christoph Burandt, Senior Principal Instructor, Oracle University tells about his first experience with the cloud. He asks “ Going tothe Cloud” - what does this mean...
View ArticleA quick mongofile demo
Here’s a few simple examples of using the mongofiles utility to use MongoDB GridFS to store, search and retrieve files. Upload a file into MongoDB into a database called gridfs mongofiles -u admin...
View ArticleMogoDB学习笔记（二）CURD
一、创建、更新及删除文档 创建 创建一个 db.foo.insert(); 批量插入 减少tcp请求 文档发送到数据库会有头部信息，标志是否是插入 不能插入多个文档到多个集合 mongodb消息最大为16mb 插入原理 将数据转换成bson 检验是否包含_id键，并且文档不超过4mb 副作用 无效数据 好处：无注入式攻击风险 删除 db.user.remove 删除所有文档 保留集合和原有索引...
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How to build a distributed counter [2015]
An introduction to CRDTs A counter how simple is that? Surely, it’s a value that is incremented by a given number and it yields a new value. Simple!… until multiple “users” try to increment the counter...
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