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Open Source

It's now possible to be notify when a client disconnect for a server build on Grizzly 1.9+. here a little snippets that will allow you that.  Thanks to the new ConnectionCloseHandler. public void init(){                int port = 5000;                try {  ...
on Nov 25, 2008
Suppose that you are dealing with sql query that you send to a database.  Some query could take few seconds to run, that will block a Thread.  Even if you have few Threads in your pool, they could all be stuck there too.  To avoid that you can use the Producer/Consumer pattern. Take a look at this snippets. .... // default Pipeline settingsPipeline pipeline = new DefaultPipeline();...
on Nov 21, 2008
Take a look at the OpenSolaris monthly newsletter called Ignite. The debut issue, launched in October, includes news items, a ZFS tutorial, reviews, and blogs. The second issue (November 2008) is now off the press, with the highlights of the upcoming OpenSolaris 2008.11 release, an announcement of the 2008 winners of the OpenSolaris Community Innovation Awards, a screencast on the ZFS features,...
on Nov 18, 2008
I was just perusing the Google Pack Software page, Google's free software downloads. I noticed something remarkable. OpenOffice is no longer there. OpenOffice has enjoyed the partnership of Google for a while, being part of the Google Pack Software. But no more. OpenOffice just isn't there. I suppose Google prefers the online document editor hosted on its own site...its very own Google Docs. Eh...
on Nov 11, 2008
Check out this blog: Success with OpenSolaris + ZFS + MySQL in production! by Don MacAskill at SmugMug. It discusses his favorable impressions from running MySQL on OpenSolaris in production and concurrently benefiting from the volume and file-system management capabilities offered by ZFS. To quote MacAskill, "[ZFS] is pure heaven to work with. This is how file systems should have always been...
on Nov 11, 2008
I created a new logging formatter for Grizzly, because when we were debugging a test we weren't able to trace in the log the event because the default formatter in java.util.logging doesn't print the Thread that log the event. (ouff.. that a long line) The new formatter is : com.sun.grizzly.util.LoggingFormatter It's based on java.util.logging.SimpleFormatter. It's really simple to change the...
on Nov 3, 2008
In a new article on Sun Developer Network, Introducing pfexec, a Convenient Utility in the OpenSolaris OS, Sun senior systems engineer Joerg Moellenkamp tells you about a neat utility in the OpenSolaris OS. A system administrator can create a role, assign the Primary Administrator rights profile to it, and then assign users to the profile. Subsequently, those users can perform the tasks defined...
on Oct 14, 2008
I have a friend. He wrote his own programming language. Then he proceeded to embed said language into his own webserver. He found someone crazy enough to host his mishmash. Now he does all types of server side application development in this stack he cobbled together. I know building things to understand them motivates my friend. In fact, I think his motto is "certum quod factum". We...
on Oct 8, 2008
This time, my work had about 800 lines changes/new lines spanning 16 files and was implementing two RFCs. All that was plain simple java code and not very complicated, but still the worry I always had about presenting the changes to the reviewers (in different geos) came up on my head. It is still my code and not their code. It should be as easy as possible for them to understand the changes...
on Sep 24, 2008
Roman Strobl's recent posting on The Observatory contains a nice map that shows the locations of the OpenSolaris user groups, which now total 70, spread throughout the world. For more details, see this list on opensolaris.org. Not only are there OpenSolaris user groups in major cities like Beijing and San Francisco, you'll also find those groups in Puget Sound, Washington and Kiev, Ukraine....
on Sep 11, 2008
The kudos for OpenSolaris keep coming. Here are a few recent postings: Sun Ultra 24 and OpenSolaris 2008.05 First Impressions"I've been using the new box and OpenSolaris for a week now and have no complaints. All and all a great experience for me and for my MacBook Pro." What Make Solaris Different From Other OSZoning, DTrace, more stability, better security, ZFS, office productivity .... Five...
on Sep 8, 2008
A video presentation by Sun's Roman Shaposhnik at the June 25 OpenSolaris Developer Conference in Prague is worth a look. The talk focuses on the reasons why it makes sense to develop applications on the OpenSolaris platform with Sun Studio as a tool of choice. The video also features a talk by Adriaan De Groot, who discusses the nuances of building the KDE Project in C++ with Sun Studio on...
on Aug 28, 2008
Earlier, Lee Bieber—an engineering manager-cum-friend I worked with at Sun before and who just rejoined the company (yay!)—pointed me to a Slashdot posting: OpenSolaris from a Linux Admin Perspective It refers to a recent Linux Format article that highlights the observations from Juliet Kemp, who "takes OpenSolaris for a test drive." Included are her assessments of the installation...
on Aug 20, 2008
Sun's Tim Foster has posted an informative list of news items on OpenSolaris for July 2008. Included are a project proposal for support of the Sierra-Intel WiFi chipsets, presentation slides from the OpenSolaris Developer Conference 2008, the start of the Integrated Load Balancer project, and so forth. Thanks to Tim for all the updates. Please keep them up!While on the subject of OpenSolaris,...
on Aug 18, 2008
I released SomnifugiJMS v22 a few weeks back. Not alpha-0-22. This subtlety is a big change in approach for a small change in code. I make fewer changes in each release, and the extremely stabile JMS specification is only so big. I've added most of the features I intend to implement. After eight years of work, six years in production systems, and 21 alpha releases it's starting to feel done. I'd...
on Jul 23, 2008
The list of finalists for SourceForge.net's 2008 Community Choice Awards is worth a look. I was impressed by the page design, which highlights the categories, project names, and their URLs "above the fold," so to speak. According to the CCA home page, the winners will be announced later this week during OSCON 2008, of which Sun is a platinum sponsor. OpenOffice.org is a finalist in three...
on Jul 22, 2008
This is a contribution to Jetty Web Server, to allow SMF on Solaris 10 machines to manage Jetty servers, see the benefits Allow non-root users to bind to privileged port Watchdog service (can restart server if process is down for unknown reason) Standard use of SMF service So what is SMF ? It stands for Service Management Facility. See more information at OpenSolaris website. And a small...
on Jul 16, 2008
For some time I was thinking about writing this post and I have just watched Chris DiBona presenting a fantastic session called Open Source is Magic in Google I/O and got motivated. In addition to this, today is Download Day (if you have not downloaded Firefox 3.0 yet, go ahead and do it), so nothing better than write about open source on this Tuesday. I was deep thinking why people write open...
on Jun 17, 2008
For my German blog over at nosilverbullet.de I use Roller as the blog engine. Being a lazy person I did not bother to design a theme for myself. So I went over to roller.dev.java.net and downloaded the theme collection. Of these the theme "rational" was the one I chose for my blog. Testing the theme on my development box I surprisingly noticed that I wasn't able to post comments. Of course I...
on Jun 13, 2008
Last week’s JavaOne had a separate track on open source, and there’s been a substantial number of very interesting panels, discussions and presentations. However, i felt that these talks concentrated mostly on big, well-established and very broad open-source communities. While it is perfectly understandable, the few dozens of these high-profile communities do not reflect the specific problems...
on May 19, 2008