Hello friends! I work on the JRuby project, and have recently (a couple times in the past year) attempted to get Discourse running. It would mean you can run a single Discourse process for a whole site, and probably use less memory and CPU at the same time. I think it’s worth getting it to run. As…

Yes absolutely. We really want to work with JRuby, what are the current stumbling blocks?

Here’s the diff I have at the moment. This is not an exhaustive list of extensions with no JRuby support but it’s most of them. https://gist.github.com/headius/99f7a177b67d635d4783e7f7b164a3c9 Gemfile.diff diff --git a/Gemfile b/Gemfile index 3db4f98f0a..75cd7943a3 100644 --- a/Gemfile…

[image] headius: Presumably unicorn can just be replaced with puma. Both are in the Gemfile. Yes this is totally safe, puma is supported. If we really want to conserve memory here though it may be interesting to run sidekiq inside puma. [image] headius: fast_blank (transitive dependency …

[image] sam: Oh, we should bench this if perf is the same we can move to xorcist The fast_xor README actually says to use xorcist. I believe the code was simply moved there and expanded to support JRuby. Here’s the complete list of exts with status as I know it today. bootsnap: JRuby suppo…

@sam any of the easy / obvious replacements we should do next week just to get more obstacles out of the way of this happening.

I just did this. update onebox committed 11:15PM - 25 Feb 18 UTC (UTC) [image] SamSaffron +3 -4 …

[image] sam: Regarding Rhino, you got to make sure the ruby rhino with latest GitHub - mozilla/rhino: Rhino is an open-source implementation of JavaScript written entirely in Java It looks pretty silent there Commits · cowboyd/therubyrhino · GitHub . Ideally I would prefer v8, but at a minimum w…

[image] sam: We really want to work with JRuby Aside: can y’all share with those of us on the sidelines a little bit about why? Is the notion that JRuby would replace MRI as the default implementation for Discourse in the future if you get this working?

That certainly isn’t my goal! JRuby would always be an alternative, and in some cases it may be a better choice than MRI for larger deployments. A single JRuby instance can handle an entire server load, maxing out all cores. If you are getting to the point of running 3 or 4 or 5 MRI instances, there…

Getting Discourse running on JRuby

Development

eviltrout (Robin Ward) February 23, 2018, 7:22pm 6

giphy

This is so exciting!

Topic		Replies	Views
Discourse on Truffleruby Development	14	1275	May 16, 2025
Update Gemfile fast_xor platform to :ruby Development	5	1117	August 21, 2022
Why hasn't Discourse been rewritten in Rust? Development	23	1083	July 23, 2024
Which Regex Implementation Does Discourse Use? Development	5	860	April 29, 2020
Is Discourse using Ruby 2.0? Howto use Ruby 2.2 Self-hosting	11	2543	May 19, 2016

Getting Discourse running on JRuby

Related topics