* [ANN] unicorn 5.0.0 - Rack HTTP server for fast clients and *nix
@ 2015-11-01 8:55 Eric Wong
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From: Eric Wong @ 2015-11-01 8:55 UTC (permalink / raw)
To: ruby-talk, unicorn-public
Unicorn is an HTTP server for Rack applications designed to only serve
fast clients on low-latency, high-bandwidth connections and take
advantage of features in Unix/Unix-like kernels. Slow clients should
only be served by placing a reverse proxy capable of fully buffering
both the the request and response in between unicorn and slow clients.
* public list: firstname.lastname@example.org
* mail archives: http://bogomips.org/unicorn-public/
* git clone git://bogomips.org/unicorn.git
Changes since 4.9.0:
unicorn 5.0.0 - most boring major release. EVER.
An evolutionary dead-end since its announcement nearly six years
ago, this old-fashioned preforker has had enough bugs and missteps
that it's managed to hit version 5!
I wish I could say unicorn 5 is leaps and bounds better than 4, but
it is not. This major version change allows us to drop some cruft
and unused features which accumulated over the years, resulting in
several kilobytes of memory saved!
* The horrible, proprietary (:P) "Status:" response header is
finally gone, saving at least 16 precious bytes in every HTTP
response. This should make it easier to write custom HTTP clients
which are compatible across all HTTP servers. It will hopefully
make migrating between different Rack servers easier for new
* Ruby 1.8 support removed. Ruby 1.9.3 is currently the earliest
supported version. However, expect minor, likely-unnoticeable
performance regressions if you use Ruby 2.1 or earlier. Going
forward, unicorn will favor the latest version (currently 2.2) of
the mainline Ruby implementation, potentially sacrificing
performance on older Rubies.
* Some internal, undocumented features and APIs used by
derivative servers are gone; removing bloat and slightly lowering
memory use. We have never and will never endorse the use of any
applications or middleware with a dependency on unicorn,
applications should be written for Rack instead.
Note: Rainbows! 5.0 will be released next week or so to be
compatible with unicorn 5.x
* sd_listen_fds(3) emulation added for systemd compatibility.
You may now stop using PID files and other process monitoring
software when using systemd.
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2015-11-01 8:55 [ANN] unicorn 5.0.0 - Rack HTTP server for fast clients and *nix Eric Wong
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