Tracking change and innovation in the enterprise software development community
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QCon London 2010!
March 10-12, 100
Speakers, 80 sessions,
"THE" team leads and,
architects conference.
Java Persistence API (JPA) 2.0, introduced with Java EE 6, adds in and specifies fully many things which were missing in JPA 1.0. This presentation discusses several features of JPA 2.0 such as advanced locking, enhanced query language, a shared cache API, expression/criteria API, property standardization, more flexible object modeling and more advanced O/R mapping support.
This presentation covers the definition of a graph database (information structured as mathematical graphs with nodes, relationships and properties) and their advantages when dealing with data that is difficult to fit in static tables, is rapidly evolving, or that has a lot of optional attributes. The flexibility of graph databases better support agile development and schema evolution.
Emmanuel Bernard and Max Ross talk about patterns and practices to be used in order to achieve high volume and scale with Hibernate. The presentation also explains the use of Hibernate Shards and Hibernate Search to push the scalability limits.
The data persistence solutions in software development have come a long way in the recent years. At the recent Lone Star Software Symposium, Scott Leberknight talked about "Polyglot Persistence" trend where the developers have a choice of different database products like Amazon SimpleDB, Google Bigtable, and CouchDB to choose the data persistence solution.
ODBMS.ORG has added persistence patterns to its collection of resources for educators, students, professionals, and open source practitioners. Three pattern collections comprise the initial offering in this area. A Best Persistence Pattern Award, is planned for any pattern submitted prior to May 29, 2009.
Often times when transferring persistent entities outside of the JVM you must strip off persistence related information or modifications. Gilead, formerly Hibernate4GWT, aims to ease that process and handle the heavy lifting.
Brett Taylor, founder of FriendFeed, describes how they overcame some limitations of MySQL to handle problems of scaling and database evolution by implementing a "schema-less" storage system on top of MySQL.
JPA extension features like Fetch Groups offered by Apache OpenJPA framework can give enterprise Java developers more flexibility in designing JPA applications. Pratik Patel discussed JPA design techniques for developing real-world Java applications using JPA API and Spring 2.5 framework. He did a presentation at the recent Central Ohio Software Symposium on Enterprise JPA.
