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Handling the Extremes: Scaling and Streaming in Finance

Editor’s Note: At Strata+Hadoop World 2016 in New York, MapR Director of Enterprise Strategy & Architecture Jim Scottgave a presentation on “Handling the Extremes: Scaling and Streaming in...

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Sql server dba interview questions for 3 years experience

Ms SQL Server DBA experienced interview questions and answers - 2 This is the actual call recording of an interview for an experienced Ms SQL Server DBA sql interview questions and answers for...

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Sql server dba interview questions for 5 years experience

Ms SQL Server DBA experienced interview questions and answers - 2 This is the actual call recording of an interview for an experienced Ms SQL Server DBA sql interview questions and answers for...

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Sql server dba interview questions for experienced professionals

Ms SQL Server DBA Experienced Interview Questions And Answers - 06 Ms SQL Server DBA Experienced Interview Questions And Answers - 06 This is the actual call recording of an interview for an...

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mongodb添加arbiter节点的方法示例

前言在创建mongodb的replica set的时候,只是做成了1主2从,没有做成1主1从1仲裁。这我们将一个几点从replica set中删除,再以仲裁节点的身份加入到replica set中:1.初始状态:shard1ReplSet:PRIMARY> rs.status();rs.status();{ "set" : "shard1ReplSet", "date" :...

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利用mongodb查询某坐标是否在规定多边形区域内的方法

前言大家都知道MongoDB是一个基于分布式文件存储的数据库,并提供创建基于地理空间的索引的能力,本文将使用MongoDB...

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Mongodb~Linux环境下的部署

Mongodb这个文档型非关系型数据库,可以说它是最像关系型的了,之前大叔主要讲如何使用mongodb,而没有说过如何去部署和安装它,而今天大叔有必要讲一下,如何在linux环境下去部署这个mongodb,下面请跟我来! 一 wget下面安装包 # wget https://fastdl.mongodb.org/linux/mongodb-linux-x86_64-amazon-3.4.2.tgz...

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Datalake 3.0 Part 3 Distributed TensorFlow Assembly on Apache Hadoop YARN

Thank you for reading our Data Lake 3.0 series! In part 1 of the series , we introduced what a Data Lake 3.0 is and in part 2 of the series , we talked about how a multi-colored YARN will play a...

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Hadoop HA(高可用)环境的搭建

集群布局: 集群描述: 集群中有两个NameNode,两个ResourceManager。实现了NameNode的HA方案以及ResourceManager单点故障的解决。 Hadoop的HA介绍:...

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每日一博|signalR+redis 分布式聊天服务器搭建

最近在搞一个直播项目需要聊天服务器,之前是以小打小闹来做的,并没有想太多就只有一台服务器。前几天一下子突然来了5000人,服务器瞬间gg,作为开发人员的我很尴尬! 这就是我们这篇文章的背景。 我使用的是C# Mvc4.0 来开发的,这里还需要一个redis 至于你是windows版本还是linux版本我就不管了,反正是要有个地址一个端口,密码根据实际情况填写。...

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Enlightening the I/O path: A holistic approach for application performance

Enlightening the I/O Path: A holistic approach for application performance Kim et al., FAST ’17 Lots of applications contain a mix of foreground and background tasks. Since we’re at the file system...

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【SDCC讲师专访】专访MongoDB唐建法:从关系型数据库到MongoDB的战略迁移

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缓存技术PK:选择Memcached还是Redis?

要Memcached还是要Redis?在构建一款现代且由数据库驱动的Web应用程序并希望使其拥有更为出色的性能表现时,这个问题总会时不时出现、并给每一位开发人员带来困扰。在考虑对应用程序的性能表现进行提升时,缓存机制往往是解决问题的重要起点,而Memcached与Redis则经常被作为初步方案来加以比较。...

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Redis之父:10x程序员应该具备哪些素质?

编者按:在开发界有一个长期引起争议的说法,那就是所谓的10x程序员是否存在?这个说法是Brooks, F. P在《没有银弹》中首次提出的,他认为在普通设计师(程序员)和优秀设计师(程序员)之间,有着 10 倍多的差异。对于10x程序员是否存在这个问题,开源键值存储数据库系统Redis的开发者antirez(Salvatore...

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MongoDB vs MySQL Comparison: Which Database is Better?

Introduction The relational databases held the leadership for decades and at that time the choice was quite obvious, either mysql, Oracle, or MS SQL, just to name a few. They’ve served as a basis for...

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An Open Letter to Database Administrators: Be the DBA of the Future!

Robert Reeves As Datical's chief technical officer, Robert Reeves advocates for customers and provides technical architecture leadership. Before co-founding Datical, Robert was a director at the Austin...

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Building Streaming And Fast Data Applications With Spark, Mesos, Akka,...

The Competitive Advantage OfReal-Time Insights From Fast, Streaming Data It’s become clear to many business that the ability to extract real-time actionable insights from data is not only a source of...

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王成光:MongoDB和Elastic数据安全问题实战解析

2017年3月13日晚8:30分,前网易技术专家、搜狐架构师王成光带来了主题为“最新MongoDB 3.4和Elastic 5.2数据安全实战分享”的交流。以下是主持人肖丽叶整理的问答实录,记录了作者和读者问答的精彩时刻。 问:本场Chat的起源是什么?...

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【大数据】HBase最佳实践 集群规划

【大数据】HBase最佳实践 集群规划 今天10:00...

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每秒千万每天万亿级别服务之诞生

作者: tiankonguse | 更新日期: 2017-03-14 09:10:00 每秒请求几十万扩散后几千万的union服务是什么?当初为什么要做这样一个服务呢?这个服务又面临着什么问题呢? 这是篇旧文 荒蛮时代诞生的union服务 ,这里申请原创保护,故重发一下。 这个系列共有四篇: 诞生篇 , 优化篇 , 架构篇 , 运营篇 。 零、无名者无名也 大家都在等待, 等待物极必反, 等待,...

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