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HTTP/2 302 server: nginx date: Tue, 05 Aug 2025 19:48:39 GMT content-type: text/plain; charset=utf-8 content-length: 0 x-archive-redirect-reason: found capture at 20090107034012 location: https://web.archive.org/web/20090107034012/https://rack.rubyforge.org/ server-timing: captures_list;dur=1.000758, exclusion.robots;dur=0.058223, exclusion.robots.policy;dur=0.037578, esindex;dur=0.020037, cdx.remote;dur=86.726201, LoadShardBlock;dur=587.738133, PetaboxLoader3.datanode;dur=64.769437, PetaboxLoader3.resolve;dur=76.991989 x-app-server: wwwb-app202 x-ts: 302 x-tr: 703 server-timing: TR;dur=0,Tw;dur=0,Tc;dur=1 set-cookie: wb-p-SERVER=wwwb-app202; path=/ x-location: All x-rl: 0 x-na: 0 x-page-cache: MISS server-timing: MISS x-nid: DigitalOcean referrer-policy: no-referrer-when-downgrade permissions-policy: interest-cohort=() HTTP/2 200 server: nginx date: Tue, 05 Aug 2025 19:48:40 GMT content-type: text/html x-archive-orig-date: Wed, 07 Jan 2009 03:40:12 GMT x-archive-orig-server: Apache x-archive-orig-last-modified: Tue, 06 Jan 2009 12:56:40 GMT x-archive-orig-etag: "2109c80-22e2-45fcff0395200" x-archive-orig-accept-ranges: bytes x-archive-orig-content-length: 8930 x-archive-orig-vary: Accept-Encoding x-archive-orig-connection: close x-archive-guessed-content-type: text/html x-archive-guessed-charset: utf-8 memento-datetime: Wed, 07 Jan 2009 03:40:12 GMT link: ; rel="original", ; rel="timemap"; type="application/link-format", ; rel="timegate", ; rel="first memento"; datetime="Tue, 06 Mar 2007 07:59:59 GMT", ; rel="prev memento"; datetime="Mon, 29 Dec 2008 04:04:52 GMT", ; rel="memento"; datetime="Wed, 07 Jan 2009 03:40:12 GMT", ; rel="next memento"; datetime="Sun, 18 Jan 2009 07:49:38 GMT", ; rel="last memento"; datetime="Sat, 26 Jul 2025 14:57:10 GMT" content-security-policy: default-src 'self' 'unsafe-eval' 'unsafe-inline' data: blob: archive.org web.archive.org web-static.archive.org wayback-api.archive.org athena.archive.org analytics.archive.org pragma.archivelab.org wwwb-events.archive.org x-archive-src: 51_7_20090106193849_crawl101-c/51_7_20090107031035_crawl101.arc.gz server-timing: captures_list;dur=0.517622, exclusion.robots;dur=0.026057, exclusion.robots.policy;dur=0.015517, esindex;dur=0.009375, cdx.remote;dur=10.203367, LoadShardBlock;dur=156.897590, PetaboxLoader3.datanode;dur=72.411528, PetaboxLoader3.resolve;dur=150.030603, load_resource;dur=116.166218 x-app-server: wwwb-app202 x-ts: 200 x-tr: 328 server-timing: TR;dur=0,Tw;dur=0,Tc;dur=0 x-location: All x-rl: 0 x-na: 0 x-page-cache: MISS server-timing: MISS x-nid: DigitalOcean referrer-policy: no-referrer-when-downgrade permissions-policy: interest-cohort=() content-encoding: gzip Rack: a Ruby Webserver Interface

Rack: a Ruby Webserver Interface

Rack provides an minimal interface between webservers supporting Ruby and Ruby frameworks.

News

January 6th, 2008: Rack 0.9 has been released!
December 24th, 2008: Introducing the Rack Core Team
December 23rd, 2008: Rack is mentioned on heise.de!
December 5th, 2008: The tighter integration of Rails with Rack continues.
August 21st, 2008: Rack 0.4 has been released!
May 31st, 2008: Rack development moves to Git.
May 24th, 2008: There now is a Google Group on Rack Development.
February 26th, 2008: Rack 0.3 has been released!
November 10th, 2007: Rack has been presented at the Euruko 2007. Slides and a paper are available at https://chneukirchen.org/talks/.
October 2007: Ryan Allen gave a presentation on Rack (PDF).
May 16th, 2007: Rack 0.2 has been released!

Documentation

Read The Rack interface specification and other documentation.

Supported Handlers

Rack::Handler::Mongrel (also with Swiftcore's evented_mongrel, just require it before Rack.)
Rack::Handler::WEBrick
Rack::Handler::FastCGI
Rack::Handler::CGI
Rack::Handler::SCGI
Rack::Handler::LSWS

Web servers that include their own handlers:

Supported Adapters

Rack::Adapter::Camping
Coset
Halcyon
Mack
Maveric
Merb
Racktools::SimpleApplication
Ramaze
Sinatra
Vintage
Waves

Blurb

Personifi uses Rack cause we like its elegant design, speed and fast turn around time. With Rack we serve billions of requests per month. It makes our life good!
—Armin Roehrl, Lead Engineer of Personifi

License

Rack is licensed under the very liberal MIT License.

Get it!

Releases:

Rack 0.9: rack-0.9.0.tar.gz (445f542ed89308b9352d7653f33fe63c50453e3e); rack-0.9.0.tar.gz (Rubyforge)
Rack 0.4: rack-0.4.0.tar.gz (65a19e53a0dc661f4055d043126585b49a0b618d); rack-0.4.0.tar.gz (Rubyforge)
Rack 0.3: rack-0.3.0.tar.gz (5e92f2901d2dc77eb0453fc3acdd6c4a07fc167a); rack-0.3.0.tar.gz (Rubyforge)
Rack 0.2: rack-0.2.0.tar.gz (f1063711f228d19875a3211d71308b5c); rack-0.2.0.tar.gz (Rubyforge)
Rack 0.1: rack-0.1.0.tar.gz (79b46158b7b30adcd7a9148cc7ed4305); rack-0.1.0.tar.gz (Rubyforge)

Or, via Gems:

gem install rack

Mirror, may be more recent:

gem install rack --source https://chneukirchen.org/releases/gems/

Currently, bleeding-edge Rack is available via Git:

git clone git://github.com/rack/rack.git

The respository is browsable online, too.

Contact

Send patches, questions or bugs to rack-devel@googlegroups.com (archives), or visit the Rack IRC channel #rack at Freenode.

More information

Introducing Rack, an introductory blog post by Christian Neukirchen.
Rack project at Rubyforge.
racktools provides various tools for rack that make web development a charm.

Original Source | Taken Source