TorqueBox 4.0.0.alpha1

This is TorqueBox 4 and represents a substantial change in direction from previous TorqueBox releases. We’re moving to a lightweight, embedded model that runs without any Java application server, at the expense of a few of the more enterprisy features. For users that want to run in a Java application server or need those enterprisy features, we’ll provide a way to take your TorqueBox application and run it unmodified on a stock WildFly installation.


We have various guides available to help with installation, migration, usage, and deployment of TorqueBox 4.

Quickstart for running TorqueBox


TorqueBox requires JRuby 1.7.x running on Java 7+ in Ruby 1.9 or 2.0 mode. The code has only been tested on JRuby 1.7.6 and higher but should work on earlier versions.


Read the Installation Guide for installation details.

Running directly

From inside your Rack application’s root directory:

torquebox run


Ensure torquebox is in your Gemfile, then:

rails s torquebox


rackup -s torquebox


We want a smaller, more modular TorqueBox that is easier to get started with, embeddable, and lets users bring in additional functionality as-needed. More details of our motivation and community feedback are expressed in an email thread from the torquebox-user mailing list.


TorqueBox runs on JRuby and sits on top of a new lightweight, pluggable, polyglot server codenamed WunderBoss (at least for now). All the new features of TorqueBox will be implemented in WunderBoss then exposed via a Ruby API in the TorqueBox project. This lets other projects, in other languages, reuse the same functionality by creating small language-specific API wrappers.

The web portion of WunderBoss uses JBoss Undertow, which is also the same web server used in WildFly (the successor to JBoss Application Server).

We aim to reuse the same underlying components as WildFly so that TorqueBox applications can run on top of WildFly in addition to running without it, to give users an option between a full-blown Java application server and a very lightweight, minimal server.

Current status

Right now TorqueBox 4 provides a high-performance Rack implementation for web applications and basic APIs for messaging, caching, and scheduled jobs. The Rack support is considered production-ready, but the messaging, caching, and scheduling implementations are still in a bit more flux.


We’re developing TorqueBox 4 while also maintaining TorqueBox 3, and we expect it to take some time before TorqueBox 4 comes out of alpha and betas and into a final release.

Building TorqueBox

bundle install
rake build

Running specs

rake spec

Running integration tests

Make sure phantomjs is available on your $PATH -

The first time you run the integration tests may take longer as bundler gets invoked for each test application to install its dependencies. Subsequent runs with the same JRuby installation should be faster.

cd integration-tests
rake spec

Running a single integration test

cd integration-tests
SPEC=spec/basic_sinatra_spec.rb rake spec

Running specs with more verbose output

DEBUG=true rake spec

Running all integration test variants (disk, jar, wildfly)

There are several variants of integration tests. Each runs the same applications and same specs, but packaged in different ways. This takes quite a bit longer, but is what CI runs.

rake spec:all

Installing from source

rake install



TorqueBox 4 is released from the torqbox branch of torquebox/torquebox-release.

Set up this repository as an additional remote for your workspace:

git remote add release

Ensure that the torqbox branch has the contents you wish to release. Using the -f flag to force is allowed in this case, since the torquebox-release repository is not a public-facing human-cloneable repository.

git push release torqbox:torqbox -f

Perform the build

Using the build system, select the torquebox4-release job, entering in the branch to release from (usually ‘torqbox’), the version to release, and the next version after release.

If something goes wrong in the release job and it needs to run again, be sure to reset the torquebox-release repository with the correct code first:

git push release torqbox:torqbox -f

Deploy RubyGems

After the job complete successfully, the generated RubyGems will need to be manually deployed. Download them from the job and push each using:

gem push <gem_name>.gem

You’ll have to be an owner of the gems to do this. Bug bbrowning, bobmcw, or tcrawley if you are not.

Build the release API documentation

Under the Release tab on CI, there is a torquebox4-release-docs job which builds against a tag in the release git repository, and publishes the API documentation to No preparation or modification of the release repository is needed. In fact, the exact tag pushed by the primary torquebox-release job is required to build the docs.

Push changes from the release repository to the official repository

git fetch release
git merge release/torqbox
git push origin torqbox

Release the project in JIRA

Announce it

Post it on

Notify the torquebox-users@ list

Tweet it.

Set the /topic in #torquebox IRC channel using ChanServ (if you can).