https://github.com/steveklabnik/mono_logger

A lock-free logger for Ruby 2.0
https://github.com/steveklabnik/mono_logger

Keywords from Contributors

rubygem asynchronous-tasks asynctask background-jobs background-service background-worker job-management job-queue job-scheduler activejob

Last synced: about 22 hours ago
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Repository metadata

A lock-free logger for Ruby 2.0

Host: GitHub
URL: https://github.com/steveklabnik/mono_logger
Owner: steveklabnik
License: mit
Created: 2013-03-20T04:56:11.000Z (almost 13 years ago)
Default Branch: master
Last Pushed: 2023-04-06T17:19:11.000Z (almost 3 years ago)
Last Synced: 2026-01-26T17:39:43.252Z (about 1 month ago)
Language: Ruby
Homepage: https://github.com/steveklabnik/mono_logger
Size: 28.3 KB
Stars: 105
Watchers: 4
Forks: 8
Open Issues: 1
Releases: 0
Metadata Files:
- Readme: README.md
- License: LICENSE.txt

MonoLogger

Ruby's stdlib Logger wraps all IO in mutexes. Ruby 2.0 doesn't allow you to
request a lock in a trap handler because that could deadlock. This gem fixes
this issue by giving you a lock-free logger class.

If you've ever seen log writing failed. can't be called from trap context,
you're in the right place!

Installation

Add this line to your application's Gemfile:

gem 'mono_logger'

And then execute:

$ bundle

Or install it yourself as:

$ gem install mono_logger

Usage

It's simple, just use MonoLogger anywhere you'd use Logger:

require 'logger'


logger = Logger.new(STDOUT)
logger.level = Logger::WARN

logger.debug("Created logger")
logger.info("Program started")
logger.warn("Nothing to do!")

Turns into

require 'mono_logger'


logger = MonoLogger.new(STDOUT)
logger.level = MonoLogger::WARN

logger.debug("Created logger")
logger.info("Program started")
logger.warn("Nothing to do!")

That's it! No more errors!

Contributing

Fork it
Create your feature branch (git checkout -b my-new-feature)
Commit your changes (git commit -am 'Add some feature')
Push to the branch (git push origin my-new-feature)
Create new Pull Request

License

MIT. See LICENSE.txt for more details.

Owner metadata

Name: Steve Klabnik
Login: steveklabnik
Email: steve@steveklabnik.com
Kind: user
Description: Rust, jj, other things
Website: http://steveklabnik.com
Location: Austin, TX
Twitter:
Company: East River Source Control
Icon url: https://avatars.githubusercontent.com/u/27786?u=5af723f67163593cc930a745f73a64a3b1e150e3&v=4
Repositories: 843
Last ynced at: 2026-01-31T18:14:38.279Z
Profile URL: https://github.com/steveklabnik

GitHub Events

Total

Last Year

Committers metadata

Last synced: 1 day ago

Total Commits: 25
Total Committers: 5
Avg Commits per committer: 5.0
Development Distribution Score (DDS): 0.48

Commits in past year: 0
Committers in past year: 0
Avg Commits per committer in past year: 0.0
Development Distribution Score (DDS) in past year: 0.0

Name	Email	Commits
Steve Klabnik	s**e@s**m	13
Sam Bostock	s**k@s**m	4
Jun Aruga	j**a@r**m	4
Ken Dreyer	k**r@k**m	3
Joshua Burke	D****r	1

Committer domains:

Issue and Pull Request metadata

Last synced: 17 days ago

Total issues: 7
Total pull requests: 6
Average time to close issues: 4 months
Average time to close pull requests: 6 months
Total issue authors: 5
Total pull request authors: 4
Average comments per issue: 4.0
Average comments per pull request: 6.0
Merged pull request: 5
Bot issues: 0
Bot pull requests: 0

Past year issues: 0
Past year pull requests: 0
Past year average time to close issues: N/A
Past year average time to close pull requests: N/A
Past year issue authors: 0
Past year pull request authors: 0
Past year average comments per issue: 0
Past year average comments per pull request: 0
Past year merged pull request: 0
Past year bot issues: 0
Past year bot pull requests: 0

More stats: https://issues.ecosyste.ms/repositories/lookup?url=https://github.com/steveklabnik/mono_logger

Top Issue Authors

junaruga (3)
jstorimer (1)
balasankarc (1)
st0012 (1)
mperham (1)

Top Pull Request Authors

junaruga (3)
sambostock (1)
Dangeranger (1)
ktdreyer (1)

Top Issue Labels

Top Pull Request Labels

Package metadata

Total packages: 12
Total downloads:
- rubygems: 99,481,956 total
Total docker downloads: 889,820
Total dependent packages: 35 (may contain duplicates)
Total dependent repositories: 4,732 (may contain duplicates)
Total versions: 20
Total maintainers: 1

gem.coop: mono_logger

A lock-free logger compatible with Ruby 2.0. Ruby does not allow you to request a lock in a trap handler because that could deadlock, so Logger is not sufficient.

Homepage: http://github.com/steveklabnik/mono_logger
Documentation: http://www.rubydoc.info/gems/mono_logger/
Licenses: MIT
Latest release: 1.1.2 (published almost 3 years ago)
Last Synced: 2026-03-02T18:32:17.026Z (1 day ago)
Versions: 5
Dependent Packages: 0
Dependent Repositories: 0
Downloads: 49,754,198 Total
Docker Downloads: 444,910
Rankings:
- Dependent repos count: 0.0%
- Dependent packages count: 0.0%
- Average: 0.504%
- Downloads: 0.517%
- Docker downloads count: 1.497%
Maintainers (1)
- steveklabnik

rubygems.org: mono_logger

A lock-free logger compatible with Ruby 2.0. Ruby does not allow you to request a lock in a trap handler because that could deadlock, so Logger is not sufficient.

Homepage: http://github.com/steveklabnik/mono_logger
Documentation: http://www.rubydoc.info/gems/mono_logger/
Licenses: MIT
Latest release: 1.1.2 (published almost 3 years ago)
Last Synced: 2026-02-28T20:00:42.028Z (3 days ago)
Versions: 5
Dependent Packages: 35
Dependent Repositories: 4,732
Downloads: 49,727,758 Total
Docker Downloads: 444,910
Rankings:
- Dependent repos count: 0.459%
- Downloads: 0.482%
- Dependent packages count: 0.728%
- Docker downloads count: 1.694%
- Average: 3.059%
- Stargazers count: 5.313%
- Forks count: 9.679%
Maintainers (1)
- steveklabnik

debian-11: ruby-mono-logger

Homepage: http://github.com/steveklabnik/mono_logger
Documentation: https://packages.debian.org/bullseye/ruby-mono-logger
Licenses:
Latest release: 1.1.0-3.1 (published 21 days ago)
Last Synced: 2026-02-13T08:22:43.372Z (18 days ago)
Versions: 1
Dependent Packages: 0
Dependent Repositories: 0
Rankings:
- Dependent repos count: 0.0%
- Dependent packages count: 0.0%
- Average: 100%

ubuntu-23.10: ruby-mono-logger

Homepage: https://github.com/steveklabnik/mono_logger
Licenses:
Latest release: 1.1.1-2 (published 18 days ago)
Last Synced: 2026-02-13T18:25:58.226Z (18 days ago)
Versions: 1
Dependent Packages: 0
Dependent Repositories: 0
Rankings:
- Dependent repos count: 0.0%
- Dependent packages count: 0.0%
- Average: 100%

ubuntu-24.04: ruby-mono-logger

Homepage: https://github.com/steveklabnik/mono_logger
Licenses:
Latest release: 1.1.1-2 (published 25 days ago)
Last Synced: 2026-02-06T15:34:38.879Z (25 days ago)
Versions: 1
Dependent Packages: 0
Dependent Repositories: 0
Rankings:

debian-10: ruby-mono-logger

Homepage: http://github.com/steveklabnik/mono_logger
Documentation: https://packages.debian.org/buster/ruby-mono-logger
Licenses:
Latest release: 1.1.0-3 (published 20 days ago)
Last Synced: 2026-02-13T04:23:13.895Z (19 days ago)
Versions: 1
Dependent Packages: 0
Dependent Repositories: 0
Rankings:
- Dependent repos count: 0.0%
- Dependent packages count: 0.0%
- Average: 100%

ubuntu-20.04: ruby-mono-logger

Homepage: http://github.com/steveklabnik/mono_logger
Licenses:
Latest release: 1.1.0-3 (published 18 days ago)
Last Synced: 2026-02-13T07:18:02.910Z (18 days ago)
Versions: 1
Dependent Packages: 0
Dependent Repositories: 0
Rankings:
- Dependent repos count: 0.0%
- Dependent packages count: 0.0%
- Average: 100%

ubuntu-23.04: ruby-mono-logger

Homepage: https://github.com/steveklabnik/mono_logger
Licenses:
Latest release: 1.1.1-2 (published 21 days ago)
Last Synced: 2026-02-11T06:44:13.772Z (21 days ago)
Versions: 1
Dependent Packages: 0
Dependent Repositories: 0
Rankings:
- Dependent repos count: 0.0%
- Dependent packages count: 0.0%
- Average: 100%

ubuntu-24.10: ruby-mono-logger

Homepage: https://github.com/steveklabnik/mono_logger
Licenses:
Latest release: 1.1.1-2 (published 22 days ago)
Last Synced: 2026-02-09T16:57:38.833Z (22 days ago)
Versions: 1
Dependent Packages: 0
Dependent Repositories: 0
Rankings:

debian-12: ruby-mono-logger

Homepage: https://github.com/steveklabnik/mono_logger
Documentation: https://packages.debian.org/bookworm/ruby-mono-logger
Licenses:
Latest release: 1.1.1-2 (published 19 days ago)
Last Synced: 2026-02-12T23:35:24.193Z (19 days ago)
Versions: 1
Dependent Packages: 0
Dependent Repositories: 0
Rankings:

ubuntu-22.04: ruby-mono-logger

Homepage: https://github.com/steveklabnik/mono_logger
Licenses:
Latest release: 1.1.1-1 (published 18 days ago)
Last Synced: 2026-02-13T13:20:51.919Z (18 days ago)
Versions: 1
Dependent Packages: 0
Dependent Repositories: 0
Rankings:
- Dependent repos count: 0.0%
- Dependent packages count: 0.0%
- Average: 100%

debian-13: ruby-mono-logger

Homepage: https://github.com/steveklabnik/mono_logger
Documentation: https://packages.debian.org/trixie/ruby-mono-logger
Licenses: mit
Latest release: 1.1.2-1 (published 19 days ago)
Last Synced: 2026-02-13T13:17:37.182Z (18 days ago)
Versions: 1
Dependent Packages: 0
Dependent Repositories: 0
Rankings:
- Dependent repos count: 0.0%
- Dependent packages count: 0.0%
- Average: 100%

Dependencies

Gemfile rubygems

coveralls >= 0
logger-application >= 0

mono_logger.gemspec rubygems

minitest ~> 5.0 development
rake >= 0 development

.github/workflows/build.yml actions

actions/checkout v2 composite
ruby/setup-ruby v1 composite

Score: 24.697317533647507