| Is Virgo used in production environments? [message #939156] |
Wed, 10 October 2012 09:30  |
Eclipse User |
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We are thinking of deploying our application to a virgo server in production, but I have a feeling that most spring server applications are currently deployed to tomcat or jboss. The benefit of virgo would of course be that we can use OSGI bundles, but I'm a bit uncertain about the ability of Virgo to grow with an increasing number of users (load balancing, clustering of servers, etc .. ). Does anyone have a success story with a deployment of virgo for large applications?
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| Re: Is Virgo used in production environments? [message #939875 is a reply to message #939767] |
Thu, 11 October 2012 01:26  |
| Eclipse User |
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There was already some mention of this in the forum, and I can offer my example as reference.
We have (currently) Virgo 3.0.3 running a single-sign-on system (handling user registrations, logins and shared sessions) for a userbase that is reaching 1 million accounts and is taking hundreds of hits (web requests) per second in peak times. It's using EclipseLink and Atomikos as major components, and is clustered (two active-active members: JPA cache synchronized through JMS to an external ActiveMQ, Tomcat sessions synchronized using standard Tomcat TCP clustering, other shared data synchronized using Hazelcast). The environment has some customizations added internally, but underneath it's a full fledged Virgo Tomcat Server.
This system has been in production for a good year now (last 7 months of that as a cluster), with the only major outage being on July 1st when JVMs died because of a Linux bug caused by adding a leap second. It grew out of a codebase that has been running on the Spring-based OSGi since Spring DM server 1.0 milestone releases, and while I can say that the 1.0 was not really up to the task, with 2.0 it became much better and since 3.0, well, our record speaks for itself.
The problem is still that you'll have to invest quite a bit of time in learning all the intricacies of OSGi and integrating non-OSGi ready components that you need. But it's worth it, not only because you'll gain understanding of the components you use, but also because modular programming has advantages that you'll always be able to make use of - ranging from cleaner and higher-quality code that it promotes writing, resulting in better system architectures and ending with finished modules that you can reuse wherever you need them.
I myself am looking forward to Virgo 3.6.0 with JEE web-profile support - this should additionally make it much easier to deploy Spring/JEE applications without spending too much time tweaking the server and I expect it to provide the best available environment for running Spring applications in general.
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| Re: Is Virgo used in production environments? [message #964544 is a reply to message #959209] |
Tue, 30 October 2012 12:00 |
| Eclipse User |
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The OSGi Alliance are keen to promote success stories. If anyone on this thread would be willing to provide some basic information about your use of Virgo/OSGi, please email me at (disposable email address) gninquiry-osgicasestudy@yahoo.co.uk.
I should mention that I will not forward email addresses to third parties, including the OSGi Alliance, without your permission (or to VMware/SpringSource sales personnel for that matter). I'm simply interested in gathering information about how OSGi is used.
[Updated on: Tue, 30 October 2012 12:14] by Moderator |
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