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Oozie by Example

End to end Oozie example, including process design, resource coordinator and workflow implementation

Boris Lublinsky Mike Segel
on Jul 18, 2011
Micro ORMs with Sam Saffron and Rob Conery

Opinions about ORMs vary widely. Some see it as an essential tool for simplifying data access while others claim it greatly increases complexity while robbing applications of much needed performance. Sam Saffron and Rob Conery have found a middle ground in what’s known as a Micro ORM.

Jonathan Allen
on Jun 13, 2011
Omnipresent Synching and Availability with Mobile Couchbase

Omnipresent synchronisation will be easy with CouchDB not only hosted as server side database but also being embedded in mobile applications. Couchbase made the NOSQL Document Database available for the mobile platforms to enable developers to benefit from the replication and offline capabilities while using the convenient and uniform HTTP based protocol to interact with it locally or remotely.

Michael Hunger
on May 24, 2011
Guardian.co.uk Switching from Java to Scala

Citing a need to be able to respond faster to events, and disappointment in the feature set and timeframe for Java 7, the team behind guardian.co.uk is using Scala as an alternative to Java for their new projects. InfoQ spoke to Web Platform Development Team Lead Graham Tackley about their current stack, the reasons behind the move, and the experience of using Scala in large-scale development.

Charles Humble
on Apr 04, 2011
Pieter van Zyl on Benchmarking ORM Tools and Object Databases

OO7J is a Java version of the original OO7 benchmark (written in C++). This project includes benchmarking Object Relational Mapping (ORM) tools. Currently there are implementations for Hibernate on PostgreSQL, MySQL, db4o and Versant databases. InfoQ and Roberto V. Zicari from ODBMS.ORG recently interviewed Pieter van Zyl, creator of the OO7J benchmark.

Roberto Zicari Srini Penchikala
on Mar 21, 2011
Making Microsoft Sync Framework work with PostgreSql

Microsoft Sync Framework is used for occasionally connected clients, for peer-peer applications, and other applications where data needs to be synchronized between multiple data stores. While it doesn’t include providers for non-Microsoft databases, the framework makes it easy to add that support. Roopesh Shenoy demonstrates using PostgreSql.

Roopesh Shenoy
on Mar 18, 2011
Concurrency Controls in Data Replication

Learn about leading concurrency control mechanisms used for data replication in distributed environments, comparing synchronous and asynchronous implementations with/without locking - techniques used by Oracle RAC, TimesTen, and GigaSpaces and NoSQL databases. Explore tradeoffs among performance, consistency, deadlocks, and conflicting updates in the context of a sample distributed application.

Yongjun Jiao
on Mar 01, 2011
LinkedIn Signal: A Case Study for Scala, JRuby and Voldemort

On September 29th LinkedIn Signal was announced, providing a social search application both for LinkedIn shares and tweets from LinkedIn-Twitter bounded accounts. This article aims to provide more insight into the motivation and technical challenges of combining Scala, JRuby and Voldemort, at such scale.

Dio Synodinos
on Oct 11, 2010
Revving Up Your Hibernate Engine

This article explores tuning techniques for Hibernate-based applications, focusing on tuning topics that are effective but poorly documented, such as inheritance mapping, second level cache and enhanced sequence identifier generators. It also provides some background database information which is essential for tuning Hibernate.

Stewart Clark Yongjun Jiao
on Oct 06, 2010
Finding an Agile Employer

The rocky job market of the last couple years has left many people looking for work. Agile software development is appealing to many job seekers, but not all jobs are alike. If you want a job in Agile software development, using a framework like Scrum, you need a plan of action that spans all three phases of your job search: reseach/preparation, interviewing, and assessing your opportunities.

Angela Druckman
on Aug 31, 2010
Data Mining in the Swamp: Taming Unruly Data With Cloud Computing

Matrix presents a white paper on using the open source tool, Hadoop, to implement the MapReduce strategy and a Cloud computing strategy to solve business intelligence problems.

John Brothers
on Aug 13, 2010
Eight Quick Ways to Improve Java Legacy Systems

Even Java systems can be "legacy" systems. This article explores 8 quick and relatively low risk ways to improve even the crustiest Java application. Applications that may have previously been written off as dead can find new life by using these tips to improve performance, reduce operations overhead and grease the gears of the development lifecycle.

Tim Cull
on Jul 26, 2010

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