Comments on: JRuby, sharing objects across multiple runtimes. JMagLev?

By: Hubert Łępicki

Hubert Łępicki — Thu, 29 Jan 2009 22:31:53 +0000

That’s really interesting – however I doubt that your approach with making all global variables accessible from all instances will make big community around it. I think it’s better to specify which variables you need to share, and rest (default) shouldn’t be shared.

By: Play with JMaglev yourself « Fabio Kung

Play with JMaglev yourself « Fabio Kung — Sat, 22 Nov 2008 21:05:32 +0000

[...] releasing my experiments with JRuby and Terracotta, so you can play with JMaglev and contribute some code. The project is in [...]

By: Danilo Sato » Blog Archive » [Rails Summit Latin America] Conference Report

Tue, 04 Nov 2008 18:04:27 +0000

[...] to watch my friend Fabio Kung present on JRuby and give a real-life demo of his experiments with JMagLev. After that, we all went to watch the closing keynote, by Obie Fernandez. It was a great talk about [...]

By: blog.caelum.com.br » JRuby on Rails, no Rails Summit Latin America

blog.caelum.com.br » JRuby on Rails, no Rails Summit Latin America — Wed, 22 Oct 2008 03:23:40 +0000

[...] o Ribs do Ola Bini, que permitirá o uso do Hibernate em projetos JRuby. O segundo foi o demo do JMaglev, usando Nailgun, já que tinha bastante gente que achava que o vídeo que postei era [...]

By: Fabio Kung

Fabio Kung — Tue, 21 Oct 2008 16:03:24 +0000

@Mark

1) Unfortunately not in the next (1.1.5). There are things that must be tuned yet. I’ve already discussed a bit with Charles Nutter. The main points are: a) global object identity, b) shared metaclasses. But it is already usable.

2) Not yet. That is my next step; or perhaps I will open the source in github first.

By: Mark

Mark — Tue, 21 Oct 2008 06:35:36 +0000

Very nice.
1) Are the required JRuby changes likely to make it into a released JRuby?
2) Was the Terracotta ’side-of-things’ written as a Terracotta Integration Module (TIM)?

By: Guilherme Cirne

Guilherme Cirne — Fri, 10 Oct 2008 03:45:59 +0000

Very impressive! Just as impressive as the original MagLev demo that I was lucky enough to see at RailsConf.

By: ARI ZILKA

ARI ZILKA — Thu, 09 Oct 2008 11:27:43 +0000

I love it! Transparent JRuby clustering. Good idea there.

–Ari

By: Hugo Baraúna

Hugo Baraúna — Thu, 09 Oct 2008 04:35:51 +0000

Muito bom!

By: Fabio Kung

Fabio Kung — Wed, 08 Oct 2008 20:59:54 +0000

Thanks for the link Saravanan. Yes, I’ve seen it, but I took a different approach.

The main difference is that in my version of the Terracotta integration, all global variables are automatically shared across JVM cluster nodes. It is “transparent”, as it doesn’t require any explicit control in the Ruby code.