Spring Data Key Value (Redis + Riak) 1.0.0.M3 Released

Releases | Costin Leau | April 06, 2011 | ...

Dear Spring Community,

I am pleased to announce the third milestone release of the Spring Data Key Value 1.0 project, with support for Redis and Riak, is now available!

Downloads | JavaDocs | Reference Documentation | Changelog

This release introduces several new features for Redis, such as:

  • Support for a new Redis client, RJC bringing the number of Redis connectors to three
  • New object-hash (and vice-versa) mapping
  • Improved exception hierarchy
  • Dedicated support for SORT, SORT/GET pattern and returned bulk values

Additionally, a new sample is now available that showcases the various Spring Data features: RetwisJ a Twitter-clone based entirely on Redis.

We look forward to your feedback on this forum or in the issue tracker.

This week in Spring: April 5th, 2011

Engineering | Josh Long | April 05, 2011 | ...

This year is moving along at a very quick clip!

We've already seen a torrent of new and exciting releases for Spring users and just today news of perhaps the most exciting thing yet went out. If you didn't get it because you aren't, for example, a registered SpringSource Tool Suite user, then here are the salient bits:

Next Tuesday - April 12th - VMware is hosting a webinar - "Spring into the cloud!" - with the provocative explanation, "Spring has already simplified enterprise Java development. Next up is cloud development."

The webinar will be presented for both Europe and North America timezones. See this page for details, and don't…

Spring Data Graph - Neo4j Support 1.0.0.RC1 Released

Releases | Thomas Risberg | April 05, 2011 | ...

Dear Spring Community,

We are pleased to announce that the first release candidate (1.0.0.RC1) of the Spring Data Graph 1.0 project with Neo4j support is now available!

The primary goal of the Spring Data project is to make it easier to build Spring-powered applications that use new data access technologies such as non-relational databases, map-reduce frameworks, and cloud based data services.

The Graph Neo4j module provides integration with the Neo4j graph database.

Downloads | JavaDocs | Reference Documentation | Changelog

To learn more about the project, visit the Spring Neo4j Homepage.


Spring Data JDBC Extensions with Oracle Database Support 1.0.0.M1 Released

Releases | Thomas Risberg | April 01, 2011 | ...

Dear Spring Community,

We are pleased to announce that the first milestone release (1.0.0.M1) of the Spring Data JDBC Extensions 1.0 project with Oracle Database support is now available!

The new Spring Data JDBC Extensions project was created to provide additional support for vendor specific JDBC extensions. The bulk of the support is made up of code ported from the SpringSource project "Advanced Pack for Oracle Database" that was available for support subscription customers. We are now making this code available to all Spring users and any new developments will be made in the Spring Data…

Routing Topologies for Performance and Scalability with RabbitMQ

Engineering | Helena Edelson | April 01, 2011 | ...

Designing a good routing topology for a highly-scalable system can be like mapping a graph. Many things need to be considered, for instance the problem, constraints of the environment, those of the messaging implementation, and performance strategies. What we often run up against is a lack of flexibility and expressivity in fitting routing to our needs. Here is where RabbitMQ stands out.

Basic Concepts

Anyone familiar with messaging in general knows the concept of routing messages from A to B. Routing can be simplistic or quite complex, and when designing a routing topology for a scalable, complex system it must be elegant. Kept clean and decoupled, components can throttle nicely with varying loads. This can be expressed as a simple map or complex graph. In its simplest form a routing topology can be expressed as nodes, for instance hierarchical nodes:

Hierarchical nodes in message routing topology

For those new to RabbitMQ or AMQP (note that Rabbit works with many protocols including STOMP, HTTP, HTTPS, XMPP, and SMTP), here are some basic component descriptions:
  • Exchange The entity within the server which receives messages from producer applications and optionally routes these to message queues within the server
  • Exchange type The algorithm and implementation of a particular model of exchange. In contrast to the "exchange instance", which is the entity that receives and routes messages within the server
  • Message queue A named entity that holds messages and forwards them to consumer applications
  • Binding An entity that creates a relationship between a message queue and an exchange
  • Routing key A virtual address that an exchange may use to decide how to route a specific message
For point-to-point routing, the routing key is usually the name of a message queue. For topic pub-sub routing the routing key is usually hierarchical in nature:


In more complex cases the routing key may be combined with routing on message header fields and/or its content. An exchange examines a message's properties, header fields, body content, and possibly data from other sources, then decides how to route the message. A binding pattern derived from the above routing key idea might look like api.agents..operations. where we bind exchange E1 to queue Q1 with binding pattern api.agents..operations. so that any messages sent to E1 route to Q1

This week in Spring: March 29th, 2011

Engineering | Josh Long | March 29, 2011 | ...

Well, that was a good week! Lots of good stuff coming out of both the community and of course out of SpringSource itself.

This week reminded I was reminded that the Spring framework usually has something that could go a long way in simplifying or alleviating a challenge at hand if you just know where to look. Often, I'll check the SpringSource Forums, the JIRA instance, and - if I'm sufficiently convinced it's not already resolved or accounted for in the forums or in JIRA - in the StackOverflow category for Spring. SpringSource engineers try to monitor both the forums and - less ocassionally - the StackOverflow forums, as well. Additionally, I like to learn as I go - it's a "cinch by the inch, hard by the…

Spring Data Graph - Neo4j Support 1.0.0.M5 Released

Releases | Thomas Risberg | March 25, 2011 | ...

Dear Spring Community,

We are pleased to announce that a new milestone release (1.0.0.M5) of the Spring Data Graph 1.0 project with Neo4j support is now available!

The primary goal of the Spring Data project is to make it easier to build Spring-powered applications that use new data access technologies such as non-relational databases, map-reduce frameworks, and cloud based data services.

The Graph Neo4j module provides integration with the Neo4j graph database.

Downloads | JavaDocs | Reference Documentation | Changelog

To learn more about the project, visit the Spring Neo4j Homepage.

The new…

Early Access: SpringSource Tool Suite for Eclipse Indigo (3.7)

Engineering | Martin Lippert | March 25, 2011 | ...

The Eclipse Indigo (3.7) M6a packages are available for download from Eclipse since a few days, so its time for us to allow you to use the SpringSource Tool Suite (STS) on top of that milestone version. :-)

Its just an early access version of STS, but we managed to get all the pieces together for Eclipse 3.7: An AJDT version for Eclipse 3.7, a Groovy-Eclipse version that runs of 3.7 and the SpringSource Tool Suite itself, of course, containing Spring IDE, Grails tooling and all the other nice features you know from STS - all now also running on top of the latest Eclipse Indigo milestones.

How to install

The necessary dependencies for STS are all available from the composite update site: http://dist.springsource.com/snapshot/TOOLS/composite/e3.7, if you wanna add something manually.

We also included the installation instructions for 3.7 in the "Installing from the Nightly Snapshot Update Site" section of the installation instructions for STS

Spring Data JPA 1.0.0.M2 released

Releases | Oliver Drotbohm | March 24, 2011 | ...

Dear Spring Community,

we are pleased to announce that the second milestone release of the Spring Data JPA project is now available! The release includes:

  • Support for Querydsl predicates and thus type-safe JPA queries
  • Validation of @Query annotated queries at bootstrap time
  • Support for XML based entity mapping
  • Support for Distinct, In and NotIn keywords in query methods
  • Ported Hades extensions into Spring Data Commons core
  • Various bugfixes.

    <name>Spring Maven Milestone Repository</name>

Download | JavaDocs | Reference documentation (HTML) | Reference documentation (PDF) | Changelog

Looking forward to your feedback in the forums or the issuetracker.

This week in Spring: March 22nd, 2011

Engineering | Josh Long | March 23, 2011 | ...

Another great week - lots of new (and novel!) types of content and indeed, new sources of new content, too! Enjoy!

  1. SpringSource unveiled the new SpringSource YouTube channel. This channel features exciting technical content on the SpringSource technologies, and should be your first destination for new content and for content that you might've missed the first time around. Check it out today! Personally, I find that this channel is fantastic on a big screen TV that supports a browser or YouTube (Google TV/Apple TV/slingbox/etc.) or on a peripheral screen - like a second laptop or second monitor. You can also listen to it on a portable device like an iPhone in the car, on the commute.
  2. ...Speaking of the YouTube channel, the content and slides of last week's webinar - Getting Started with Spring and STS - is available for those that missed it. Juergen Hoeller, lead of the Spring framework, introduced the exciting next generation (3.1) of the Spring framework a few weeks ago in a live webinar, which is also available on the SpringSource YouTube channel!
  3. Martin Lippert has announced the latest release of the SpringSource Tool Suite, version 2.6.0. The new release is packed with new features, and tracks the latest versions of various projects (Spring Roo 1.1..2, Eclipse Helios SR2, Groovy 1.7.8, Grails 1.3.7). It included updated support and performance for both Spring Roo and Groovy on Grails, a graphical editor for Spring Web Flow, and new support for content assist, quick fixes and refactorings for Spring annotations (@Autowired, @Qualifier, @RequestMapping, etc.).
  4. Ramnivas Laddad pointed This Week in Spring to this very innovative Chrome browser plugin. To use it, type "spring" in the omnibox bar (the search/address bar) followed by a space, and then the nane of the class that you are searching for. It'll automatically bring up candidate results linked to the documentation! Fantastic, and handy! (NB: we tested this with the just-released Chrome 10, though it no doubt works with at least Chrome 9.)

  5. InfoQ has the video of Mark Pollack's and Chris Richardson's amazing introduction to Spring Data from the SpringOne2GX event last year in Chicago. Spring Data is a great way to take advantage of these new, powerful datastore options (sometimes called "NoSQL" stores) in a way that's familiar, and idiomatic for Spring users. Check it out!
  6. The latest release of the Spring Data project featuring support for Neo4j has been released. The new version includes many new features and tracks the latest version of Neo4j, itself. Neo4j is one of the many new specialized datastores available to developers today. Neo4j models data as relationships and nodes. It's optimized for fast node traversal, as in a Facebook friend-graph, for example.
    Additionally, SpringSource is producing a webinar on Spring Data (and specifically, the Spring Data Graph subprojct encompassing the Neo4j support) on April 20th. The presentation will be presented for both North America and for Europe. Register now!
  7. The Spring framework helps you build the best applications. Spring Social builds on that promise and lets you integrate your application with your users. The JTeam group is at it again, this time with an interesting updated look at Spring Social complete with source code and a sample application. Check it out!
  8. Spring MVC provides support for many different types of views, including RESTful payloads, Velocity templates, JSPs, and Tiles-based views. This blog post explains how to integrate Spring MVC with Tiles
  9. Ken Rimple from Chariot Solutions has recorded a screencast on the newest member of the SpringSource family, Wavemaker.
  10. More people are using the Spring framework now than ever before, and a consequence of that that growth is newer, specialized support for Spring in various tools. One UML toolmaker - Architexa - talks about their enhanced support for the Spring framework in their Eclipse-based product. Check out this blog for more.
  11. Ashish Jain provides an interesting perspective on Spring 3.1's new caching support.

    Ashish's chosen to simplify his software stack (by removing Hibernate, and instead using straight JDBC through the Spring framework's JdbcTemplate, a…

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