Store and Compare IP address in MongoDB A study
Hi Guys, I would like to share an issue and possible solutions for the issue related to store and compare IP address in MongoDB. The Requirement Client have its own master IP Address list marked as...
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Deploy Redis in AWS Virtual Private Cloud (VPC)
Amazon Virtual Private Cloud (Amazon VPC) enables you to provision a privatenetwork on the AWS Cloud. With VPC you can define you own subnets and also control routes between your subnets. Amazon VPC...
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Spring Integration MongoDB adapters with Java DSL
1 Introduction This post explains how to save and retrieve entities from a MongoDB database using Spring Integration. In order to accomplish that, we are going to configure inbound and outbound MongoDB...
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CacheCloud 1.2更新列表
本文用 几星 代表更新内容的重要性，星数越多，功能越重要。 升级1.2方法请参考： CacheCloud 1.1升级到1.2 [fix] 1、修复导入的应用，不能立即使用应用慢查询功能（2星） 2、修复Redis Sentinel节点包含添加slave功能（2星） 3、修复非Redis Cluster水平扩容功能（2星） 4、修复系统配置的值不能为空（3星）...
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开撕？ MongoDB 称正动摇 Oracle 的领先地位
MongoDB CEO Dev Ittycheria 称：”MongoDB 正在越来越来越大地动摇 Oracle 在数据库市场的领先地位，企业对成熟的 NoSQL 技术已经越来越自信。“ Ittycheria 称，有 30% 的业务是客户主动从其它供应商的数据库产品迁移到 MongoDB 的，而两年前这个数字仅仅只有 5%。那些被弃用的数据库中，主要是 Oracle...
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红帽集群套件RHCS四部曲
一、 什么是RHCS RHCS是Red Hat Cluster Suite的缩写，也就是红帽子集群套件，RHCS是一个能够提供高可用性、高可靠性、负载均衡、存储共享且经济廉价的集群工具集合，它将集群系统中三大 集群架构融合一体，可以给web应用、数据库应用等提供安全、稳定的运行环境。...
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Working with MongoDB in .NET (Part 1): Driver Basics & Inserting...
MongoDB, classified as a NoSQL database, is a document-oriented database system which stores data in JSON-like format. MongoDB represents JSON documents in a binary-encoded format called BSON behind...
View Article视频访谈： 专访明略数据技术合伙人孟嘉：SCOPA架构升级下的实践与优化
1. SCOPA架构升级下的实践与优化 随着“数据爆炸”时代的来临，数据挖掘成为一项重点工作，针对海量，混杂的大数据而非少量、随机化、样本化的精准数据，其关键是找到并建立不同数据间的相关性，并对其进行模式分析。...
View ArticleJedisConnectionException: java.net.SocketException: Socket closed;Unknown reply:
JedisConnectionException: java.net.SocketException: Socket closed;Unknown reply: ; It seems like server has closed the connection.解决办法 最近在使用Jedis...
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Kafka vs. Redis: Log Aggregation Capabilities and Performance
Today, it’s no question that we generate more logs than we ever have before. However, due to the large amount data that is constantly analyzing and resolving various issues, the process is becoming...
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Post-Mortem of my Asp.Net MVC Project, SQL Server, Redis and managed with VSTS
During winter 2014, I decided to re-write my old 2004 php stock simulator. My initial plan about what needed to be done changed just a few, since the beginning even if I joined Microsoft few months...
View ArticleExploring WikiVoyage data with Neo4j and Cypher: Part 1 (Loading Data)
Part 1: Intro This is part one of a three part series. In this part, I'll write about using Elixir to parse Wikivoyage data dumps and push them into the Neo4j graph database. I call this project...
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MongoDB 3.4 and “multimodel” query
“Multimodel” database management is a hot new concept these days, notwithstanding that it’s been around since at least the 1990s. My clients at MongoDB of course had to join the train as well, but...
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IT从业者在2017年年内需要担心的十项事实
【51CTO.com快译】每一年，技术行业都在以新的形态为我们带来机遇与挑战。在今天的文章中，我们将着眼于未来12个月，探讨可能出现的那些颠覆性事实。 Hadoop发行版 大数据、分析与机器学习正迅速普及，并终将彻底改变企业的实际运作方式。然而，种类愈发繁多的Hadoop发行版则可能带来困扰。...
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DBAs of the future
After a July visit to DataStax , I wrote The idea that NoSQL does away with DBAs (DataBase Administrators) is common. It also turns out to be wrong. DBAs basically do two things. Handle the database...
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Mycat1.6使用show@@help语法 Mycat Mycat使用 help语法 show语法 数据库
一、使用场景 show @@help 是一个方便进行管理的命令，所使用的端口是9906，可以根据这个端口来做一个监控系统，监控mycat,已经有mycat-web这个系统来监控了，管理端口目前不支持SQL查询语句，支持以下监控语法命令，而8806是业务系统用来接收SQL语句然后路由的系统，还没有试过有哪些SQL语句目前支持不了。 二、语法结构 mysql> show @@help;...
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presot中的codegeneration presot codegeneration ASM 代码生成 数据库
1 简介presto中使用了ASM进行代码生成，一个主要的用途是对从数据源捞上来的数据进行表达式过滤，这是代码生成的主要应用场景，主要是为了降低进行表达式评估中 JVM 的各种开销，如虚函数调用，分支预测，原始类型的对象装箱开销以及内存消耗。2...
View ArticleMycat1.6之注解&多租户 Mycat 注解多租户 Mycat分片 数据库
一、Mycat之分片--节点--主机 分片节点(dataNode) 数据切分后，一个大表被分到不同的分片数据库上面，每个表分片所在的数据库就是分片节（dataNode）。 节点主机(dataHost) 数据切分后，每个分片节点（dataNode）不一定都会独占一台机器，同一机器上面可以有多个分片数据库，...
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从零开始学JDBC--1.19连接池工具--DBCP JDBC 连接池 连接池工具 DBCP
1.导入第三方jar包这里需要导入两个2.如何使用？这里的管理连接池（数据源）的核心类：org.apache.commons.dbcp.BasicDataSource 有两种方式来获取这个类的实例对象2.1 使用硬编码方式实现连接池的管理写一个测试类： /** * 1. 硬编码方式实现连接池 */ @Test public void testDBCP() { Connection conn ;...
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IPython介绍1-内省 IPython IPython介绍 内省 Tab键自动完成
内省Tab键自动完成在shell中输入表达式时，只要按下Tab键，当前命名空间中任何与已输入的字符串相匹配的变量（对象、函数等）就会被找出来。e1.In [4]: an_apple = 27In [5]: an_example = 42In [6]: an % 意思是按键说明an_apple an_example and angle annotate...
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