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log4rs

v1.4.0 Growing

A highly configurable multi-output logging implementation for the `log` facade

MIT OR Apache-2.0 Edition 2018 MSRV 1.75
#log#logging#logger#log4

Quick Verdict

  • โœ“Stable API (1.x for 11+ years)
  • โœ“Massive adoption (3.9K crates depend on it)
  • !Heavy dependency tree (29 direct deps)
  • โœ“Permissive license (MIT OR Apache-2.0)

Security

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Downloads
20.4M
Dependents
3.9K
Releases
43
Size
78KB

Deep Insights

๐Ÿ“Š
Stable downloads

878.2K downloads in the last 30 days (29.3K/day). Volume is roughly flat compared to the previous period.

๐Ÿ”—
Widely adopted

3.9K crates depend on log4rs. Strong ecosystem adoption means battle-tested code and long-term stability.

๐Ÿ‘ค
Prolific maintainer

The primary maintainer publishes 113 crates. This suggests deep Rust expertise and long-term commitment to the ecosystem.

โœ…
Stable for 11+ years

The API has been stable (1.x) for over 11 years with 43 releases. This level of maturity means you can depend on it without worrying about breaking changes.

๐Ÿ“ฆ
Heavy dependency tree

29 direct dependencies. Consider the impact on compile times and supply chain complexity.

๐ŸŒŸ
Used by top crates

Notable dependents include fruitbasket, rsutil, zellij-utils, mesa, rustdds. When high-quality crates choose log4rs, it's a strong quality signal.

Health Breakdown

Maintenance 9/25

Recency, release consistency, active ratio

Quality 20/25

Yanked ratio, deps, size, maturity, features

Community 14/20

Reverse deps, ownership, ecosystem

Popularity 8/15

Downloads, momentum, growth trend

Documentation 11/15

Docs, repo, license, metadata

Download Trend

Daily downloads ยท last 90 days
30K/day avg-7%
010K20K30K40K2/263/164/34/215/95/26

Top Dependents

Version Adoption

v1.3.0
62%
v1.2.0
15%
v1.4.0
13%
v1.0.0
6%
v1.1.1
4%

Release Timeline

10 releasessince 2020
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3
2021
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2023
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2025
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2026
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Feature Flags

default =["all_components", "config_parsing", "yaml_format"]

gzipzstdlog_kvansi_writerjson_formattoml_formatyaml_format*json_encodersize_triggertime_triggerdelete_rollerfile_appendersimple_writerall_components*config_parsing*console_writercompound_policypattern_encoderconsole_appenderthreshold_filteronstartup_triggerbackground_rotationfixed_window_rollerrolling_file_appender

README

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Maintainers

Dependencies
29
direct dependencies
Dependents
3.9K
crates depend on log4rs

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