# Rainbows! 0.4.0 - EventMachine+async\_sinatra support **URL:** \ **Category:** Ruby\ **Created:** [October 27, 2009, 10:02am UTC](https://www.ruby-forum.com/t/rainbows-0-4-0-eventmachine-async-sinatra-support/177966 "2009-10-27T10:02:42Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![ericw](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/e/97f17d/32.png) [@ericw](https://www.ruby-forum.com/u/ericw)\ **Post date:** [October 27, 2009, 10:02am UTC](https://www.ruby-forum.com/t/rainbows-0-4-0-eventmachine-async-sinatra-support/177966/1 "2009-10-27T10:02:42Z")
Rainbows! is a HTTP server for sleepy Rack applications. It is based on Unicorn, but designed to handle applications that expect long request/response times and/or slow clients. For Rack applications not heavily bound by slow external network dependencies, consider Unicorn instead as it simpler and easier to debug. - [http://rainbows.rubyforge.org/](http://rainbows.rubyforge.org/) - removed\_email\_address@domain.invalid - git://git.bogomips.org/rainbows.git Changes: Basic single-threaded EventMachine support is now included. It supports async\_synatra[1] via the “async.callback” Rack environment[2]. For EventMachine, we rely on the updated attach/watch API in EventMachine 0.12.10. As Revactor 0.1.5 is now available, our Revactor support now depends on it as it adds the ability to listen on UNIX domain sockets. Of course, all dependencies (besides Unicorn and Rack) are soft and only loaded if your configured concurrency model requires it. For developers/QA folks, the integration tests are completely revamped for easier maintenance when new concurrency models are introduced and should also produce TAP-compliant output. The test suite remains highly parallelizable using GNU make. There are immediate plans to expand support for both Rev and EventMachine to support use with threaded application dispatch. Eric W. (41): rev: remove Revactor-specific workaround README: change ordering of concurrency model listing tests: more correct HTTP/0.9 test test-lib: avoid stalling due to bad FIFO handling rev: fix static file responses under HTTP/0.9 add news bodies to site NEWS.atom.xml tests: avoid needlessly remaking “rainbows” initial EventMachine support tests: hopefully fix stalls in input trailer tests tests: avoid race condition in reopen logs test tests: prefer “RUBY” to lowercased “ruby” tests: common setup and wait\_start functions tests: add a TAP producer shell library tests: port all existing tests to TAP library tests: remove symlinks and small files, use Make t9000: bail if run with an unsupported/pointless model tests: allow “make $model” to run tests for that model rev: spell ECONNABORTED correctly rev/evma: move common code for event models into ev\_core ev\_core: do not drop deferred bodies on graceful quits eventmachine: get basic tests working rev: do not File.expand\_path on result of body.to\_path eventmachine 0.12.8 passes all tests tests: make large file memory tests more reliable eventmachine: require EM 0.12.10 update gem dependencies in comments/local.mk.sample rev: enforce Rev::VERSION \>= 0.3.0 eventmachine: add async\_sinatra support tests: only load Revactor tests under 1.9.1 tests: gracefully exit if EventMachine is not available tests: error out if socat + curl aren’t reachable thread\*: fix MRI 1.8.6 compatibility local.mk.sample: cleanups and minor reorg eventmachine: remove unnecessary ivar assignment eventmachine: document our support of “async\_synatra” doc: Update TODO and README tests: generate all dependencies atomically app\_pool: update RDoc test-lib: DWIM handling of temp UNIX sockets revactor: require 0.1.5, remove 0.1.4 workarounds gemspec: bump up Unicorn dep version to 0.93.4 [1] [GitHub - raggi/async\_sinatra: A plugin for Sinatra to provide a DSL extension for using Thin for asynchronous responses](http://github.com/raggi/async_sinatra) [2] this is not 100% Rack::Lint compatible, but we’ll let it slide since there are already folks depending on the async\_sinatra gem