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Learn about Capped Collections in MongoDB
In this chapter, we are going to learn about the concept of Capped collections in MongoDB. When we insert documents in a MongoDB’s collection that does not have a fixed size allocated as disk memory,...
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Neo4j on Mesosphere DC/OS
By Johannes Unterstein & Jrg Schad , Mesosphere | March 15, 2017 (dcos)-[:MANAGES]->(instance)<-[:RUNS_ON]-(neo4j) The same day thatNeo4j 3.1 was released in December 2016 it also became...
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DataStax CEO launches new CX strategy focus shifting from tech to business
Billy Bosworth, DataStax CEO DataStax, one of the leading NoSQL vendors, has today unveiled a new strategy that centres around helping customers better execute their CX [customer experience]...
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From Riak to Kafka: Part I
In Apache Kafka at Spreedly: Part I Building a Common Data Substrate Ryan introduced the place Kafka will take in our infrastructure. In this series I’ll describe the implementation details of how...
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Time series data with OpenTSDB + Google Cloud Bigtable
For the last 6 years, we’ve used MongoDB as our time series datastore for graphing and metrics storage in Server Density. It has scaled well over the years and you can read about our setuphere...
View ArticleMigrating our analytics stack from MongoDB to AWS Redshift (1/2)
At Appaloosa , we have been providing stats on apps downloads and usage for more than two years. When we decided to add analytics to our offering, we had to build an architecture from the ground up....
View ArticleFive Of The Coolest Applications Every DBA Consultant Should Try In 2017
Data administration is a crucial task in the modern business environment. As more businesses go online, the need for dedicated data storage solutions becomes more critical. As such, IT companies have...
View ArticleNews of Sanakirja
We’ll release a usable version of Pijul later today. Pijul itself is in an alpha stage, but is based on a number of other things we’ve needed to write, among which a key-value store known as Sanakirja....
View ArticleSpring boot使用Redis集群替换mybatis二级缓存
pom.xml添加相关依赖 <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.5.1.RELEASE</version>...
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Vue Pouch DB - Offline, Reactive Vue Plugin that synchronizes PouchDB with Vue
Vue Pouch DB Vue Pouch DB is a VueJS Plugin that binds PouchDB with Vue and keeps a synchronised state with the database. Has support for Mango queries which are processed locally within the VuePouchDB...
View ArticleCassandra 3.0.4 Nutch 2.2.1 Issue: localhost:9160 connection refused
This morning, I setup Nutch 2.2.1 with Cassandra, when I run Nutch, it didn't work, I checked the log: 2017-03-16 07:43:57,311 WARN connection.CassandraHostRetryService - Downed...
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Rethinking Offline First sync for Service Workers
PouchDB-CouchDB sync via Service Workers, as goofily illustrated on the author’sSurface At Offline Camp California in November 2016,John Kleinschmidt and I tried to tackle the seemingly clear-cut...
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Graph Database
The wikipedia defintion of a graph databases is " In computing, a graph database is a database that uses graph structures for semantic queries with nodes, edges and properties to represent and store...
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Percona Server for MongoDB: Dashing New LDAP Authentication Plugin
This blog post is another in the series on the Percona Server for MongoDB 3.4 bundle release. In this blog, we’ll look at the new LDAP authentication plugin. Hear ye, hear ye, hear ye… With the arrival...
View ArticleKeycloak 3.0.0.CR1 发布，停止支持 Mongo
Keycloak 3.0.0.CR1 发布了，带来了一些新功能。 下载地址 该版本是首个不支持 Mongo 的版本。 值得关注的更新 No import option for LDAP- This option allows consuming users from LDAP without importing into the Keycloak database Initiate linking...
View ArticleAmazon ElastiCache Launches Enhanced Redis Backup and Restore with Cluster...
We are excited to announce thatAmazon ElastiCache now supports enhanced Redis Backup and Restore with Cluster Resizing. In October 2016, we launched support for Redis Cluster with Redis 3.2.4. In...
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使用SMACK堆栈进行快速数据分析
作者：马小龙，浙江财经大学数据分析和大数据计算的客座教授。2006年在德国不来梅大学获得数学博士学位后，在多特蒙德大学软件工程研究所从事研究和教学工作直到2011年来到中国。 本文为 《程序员》 原创文章，未经允许不得转载，更多精彩文章请 订阅《程序员》 从大数据到快速数据...
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Cloudera plans to launch data science software, cloud services
Big data software company Cloudera will announce new data science software later this week at the Strata + Hadoop World conference in San Jose, VentureBeat has learned. The company will launch Data...
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The 5-Minute Interview: Chuck Kane, Director of Global Solutions at Pitney Bowes
ByRachel Howard, Community Editor | March 17, 2017 “Moving from relational to graph, it takes time to learn to step back from your data and ask, ‘What more can I do?'” said Chuck Kane , Director of...
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Beginners guide to Apache NiFi flows
Apache NiFi is a powerful dataflow management tool for any application that requires such. With its web based graphical editor it is also a very easy to use, not just for programmers. The basics To...
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