$ git log --pretty=format:'%h %s (%cs)%d' v0.15.0 --
9555ae9 raindrops 0.15.0 - non-glibc compat fix on Linux (2015-07-22)
(tag: v0.15.0)
8177ec7 check for the existence of linux/tcp.h (2015-07-14)
8eb2645 raindrops 0.14.0 - misc doc updates (2015-06-25)
(tag: v0.14.0)
3bd881b linux_inet_diag: fix Wshorten-64-to-32 warnings (2015-01-14)
c388c34 TODO: add item for unix_diag and udp_diag (2015-01-14)
fe34c0b linux_inet_diag: clarify *fprintf usage without GVL (2015-01-14)
790f565 move mailing list to raindrops-public@bogomips.org (2015-01-13)
ea5ebd6 modernize packaging and documentation (2015-01-13)
66b05b0 README: trim intro and update license (2015-01-13)
ba6604f Add setup and teardown for ipv6 tests (2014-11-14)
...
$ git cat-file blob v0.15.0:README
= raindrops - real-time stats for preforking Rack servers
raindrops is a real-time stats toolkit to show statistics for Rack HTTP
servers. It is designed for preforking servers such as unicorn, but
should support any Rack HTTP server on platforms supporting POSIX shared
memory. It may also be used as a generic scoreboard for sharing atomic
counters across multiple processes.
== Features
* counters are shared across all forked children and lock-free
* counters are kept on separate cache lines to reduce contention under SMP
* may expose server statistics as a Rack Middleware endpoint
(default: "/_raindrops")
* middleware displays the number of actively processing and writing
clients from a single request regardless of which worker process
it hits.
== Linux-only Extra Features!
* Middleware response includes extra stats for bound TCP and
Unix domain sockets (configurable, it can include stats from
other TCP or UNIX domain socket servers).
* TCP socket stats use efficient inet_diag facilities via netlink
instead of parsing /proc/net/tcp to minimize overhead.
This was fun to discover and write.
* TCP_Info reporting may be used to check stat for every accepted client
on TCP servers
Users of older Linux kernels need to ensure that the the "inet_diag"
and "tcp_diag" kernel modules are loaded as they do not autoload correctly
== Install
We recommend GCC 4+ (or compatible) to support the
{atomic builtins}[http://gcc.gnu.org/onlinedocs/gcc/Atomic-Builtins.html]
(__sync_{add,sub}_and_fetch()). For non-GCC 4+ users, we also support
compilation with the
{libatomic_ops}[http://www.hpl.hp.com/research/linux/atomic_ops/]
package starting with Raindrops 0.4.0.
If you're using a packaged Ruby distribution, make sure you have a C
compiler and the matching Ruby development libraries and headers.
If you use RubyGems:
gem install raindrops
Otherwise grab the latest tarball from:
http://raindrops.bogomips.org/files/
Unpack it, and run "ruby setup.rb"
== Usage
See Raindrops::Middleware and Raindrops::LastDataRecv documentation for
use Rack servers. The entire library is fully-documented and we are
responsive on the mailing list (mailto:raindrops-public@bogomips.org) if
you have any questions or comments.
== Development
You can get the latest source via git from the following locations:
git://bogomips.org/raindrops.git
git://repo.or.cz/raindrops.git (mirror)
You may browse the code from the web and download the latest snapshot
tarballs here:
* http://bogomips.org/raindrops.git (cgit)
* http://repo.or.cz/w/raindrops.git (gitweb)
Inline patches (from "git format-patch") to the mailing list are
preferred because they allow code review and comments in the reply to
the patch.
We will adhere to mostly the same conventions for patch submissions as
git itself. See the Documentation/SubmittingPatches document
distributed with git on on patch submission guidelines to follow. Just
don't email the git mailing list or maintainer with raindrops patches.
raindrops is licensed under the LGPL+2.1 or later:
== Contact
All feedback (bug reports, user/development discussion, patches, pull
requests) go to the mailing list: mailto:raindrops-public@bogomips.org
Mailing list archives are available here:
http://bogomips.org/raindrops-public/
# heads (aka `branches'):
$ git for-each-ref --sort=-creatordate refs/heads \
--format='%(HEAD) %(refname:short) %(subject) (%(creatordate:short))'
* master README: update with extra disclaimer (2024-04-04)
aggregate-pmq aggregate/pmq: avoid File#stat allocation (2017-03-18)
freebsd define Raindrops::TCP hash for TCP states (2017-03-17)
gc-next linux_inet_diag: improve compatibility with newer GCs (2013-06-16)
# tags:
$ git for-each-ref --sort=-creatordate refs/tags \
--format='%(refname:short) %(subject) (%(creatordate:short))'
v0.20.1 raindrops 0.20.1 (2023-02-25) tar.gz
v0.20.0 raindrops 0.20.0 (2021-12-06) tar.gz
v0.19.2 raindrops 0.19.2 (2021-05-25) tar.gz
v0.19.1 raindrops 0.19.1 (2020-01-08) tar.gz
v0.19.0 raindrops 0.19.0 - Rack 2.x middleware compatibility (2017-08-09) tar.gz
v0.18.0 raindrops 0.18.0 (2017-03-23) tar.gz
v0.17.0 raindrops 0.17.0 - rack 2.x updates (2016-07-31) tar.gz
v0.16.0 raindrops 0.16.0 - minor fixes and workarounds (2016-02-29) tar.gz
v0.15.0 raindrops 0.15.0 - non-glibc compat fix on Linux (2015-07-22) tar.gz
v0.14.0 raindrops 0.14.0 - misc doc updates (2015-06-25) tar.gz
...
# associated public inboxes:
# (number on the left is used for dev purposes)
https://yhbt.net/raindrops-public
git clone https://yhbt.net/raindrops.git