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Redisson 2.2.23 发布，Redis 客户端
Redisson 2.2.23 发布了，Redisson 是基于Redis服务之上构建的分布式、可伸缩的Java数据结构，高级的Redis客户端。【 redis官方推荐 】 更新内容： Improvement - Future.cancel method handling for RemoteService async call Fixed - unable to redefine...
View Article优酷蓝鲸近千节点的Redis集群运维经验总结
Redis是时下比较流行的Nosql技术。在优酷我们使用Redis Cluster构建了一套内存存储系统，项目代号蓝鲸。到目前为止集群有700+节点，即将达到作者推荐的最大集群规模1000节点。集群从Redis Cluster发布不久就开始运行，到现在已经将近两年时间。在运维集群过程中遇到了很多问题，记录下来希望对他人有所帮助。 主从重同步问题 问题描述...
View ArticleNew in Couchbase Mobile v1.3: Document Expiration
Document expiration, sometimes referred to as “time to live” , or TTL, has been a feature ofCouchbase Server for some time. The new release of version 1.3adds this capability toCouchbase Mobile. Let’s...
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教你成为全栈工程师(Full Stack Developer) 四十五-一文读懂hadoop、hbase、hive、spa ...
机器学习、数据挖掘等各种大数据处理都离不开各种开源分布式系统，hadoop用户分布式存储和map-reduce计算，spark用于分布式机器学习，hive是分布式数据库，hbase是分布式kv系统，看似互不相关的他们却都是基于相同的hdfs存储和yarn资源管理，本文通过全套部署方法来让大家深入系统内部以充分理解分布式系统架构和他们之间的关系 本文结构...
View ArticleHow to Create a React.js Support Ticketing System Using MongoDB
In thelast article I wrote we talked about how to create a Redux-Form inside a React/Redux application. Now I want to put that form to work for us, and create a simple support ticketing system using a...
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Introduction to Pig
1. Objective Apache Pig is an abstraction over MapReduce. Pig is basically a tool or a platform using which will help a person to easily perform analysis of larger sets of data by representing them as...
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Uber’s case for incremental processing on Hadoop
Cubes. (source: Michael Pardo on Flickr ). Uber’s mission is to provide “transportation as reliable as running water, everywhere, for everyone.” To fulfill this promise, Uber relies on making...
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From big data pilot to production
According to Gartner, more than half of all big data projects fail to make it beyond the pilot stage. It’s important to consider what it takes to make big data projects successful in a production...
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Apache Kudu: A Fast Columnar Data Store for Hadoop
The African antelope Kudu has vertical stripes, symbolic of the columnar data store in the Apache Kudu project. Cloudera began working on Kudu in late 2012 to bridge the gap between the Hadoop File...
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8 tips to get more bang for your big data convergence bucks
See larger image Image courtesy Thinkstock How technology convergence can help CIOs do more with less CIOs and other IT decision-makers are used to having to do more with less. In the world of big...
View Articlebaeldung - Coding and Testing Stuff: Asynchronous Batch Operations in Couchbase
1. Introduction In this follow-up to our tutorial on using Couchbase in a Spring application , we explore the theasynchronous natureof the Couchbase SDK and how it may beusedto performpersistence...
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Redis入门实战（附源码）
Redis入门实战（附源码） 近期由于需要对Redis进行改造，所以顺便学习了下Redis。这篇文章是自己学习Redis写的小实例，简单易懂，超适合入门。 在网上看了很多Redis的入门文章，要么写的太深入，要么写的Level太高。总之，没有找到真正适合初学者的Redis入门文章。 在此之前，对Redis有必要清楚以下问题： Redis是什么？ Redis解决了什么问题？ Redis的优势？...
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How We Scaled Our Ad Analytics with Cassandra
On the Ad Backend team, we recently moved our ad analytics data from mysql to Cassandra . Here’s why we thought Cassandra was a good fit for our application, and some lessons we learned that you might...
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Dell DBA Days Prep: Memory Grants Added to sp_BlitzCache and sp_BlitzFirst
Exciting New Doodads WhenSP3 for 2012 dropped, we were all super excited by the new query tuning-centric features that were at our disposal. Now all we had to do was get people to install SP3! Great...
View ArticleNDP Episode #8: Oracle NoSQL and How it Integrates with RDBMS
I am pleased to announce that the eighth episode of the NoSQL Database Podcast has been published to the popular podcasting outlets. In this episode titled Oracle NoSQL and How it Integrates with...
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Become a MySQL DBA at Percona Live Amsterdam this October
There’s a new tradition that’s establishing itself in the mysql community, and that’s the Percona Live Conference in Europe, which has been taking place for the past few years in addition to the...
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Using Neo4j Spatial Procedures in legis-graph-spatial
09 Aug 2016 Neo4j 3.0 introduced the concept of user defined procedures : code written in Java (or any JVM language) that is deployed to the database and callable from Cypher. User defined procedures...
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MongoDB 2016开发者大会 萌阔 又萌又阔气的会
8月4日萌阔数据上海2016开发者大会在上海金茂君悦大酒店拉开帷幕，此次大会分享了MongoDB与富士康、东航、IBM之间的合作经历，及一些案例的分享。现场气氛热烈，座无虚席。 会议开始，由MongoDB大中华区副总裁Steve Su先生致欢迎辞，对在座各位表示欢迎并祝愿大会顺利召开。谈到了MongoDB正式成立了中国第一家分公司，介绍了“萌阔”名字的由来。 来自MongoDB的行政总裁Dev...
View ArticleRedis Replication
Replication 官网说明：http://www.redis.io/topics/replication Redis使用异步复制; 一个Master可以有多个Slaves; Slaves可以接收来自其他Slaves的链接; Slaves在初始化同步master数据的时候，Master可以继续完成查询操作; Slaves在初始化同步master数据的时候,...
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