rs/zerolog

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Zero Allocation JSON Logger

Stars: 12.5k
Forks: 639
Open beginner issues: 0
Indexed issues: 115
Avg merge: 2d 9h
Merged PRs (30d): 2

Dominant language: Go
License: MIT
Last GitHub push: Sep 8, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: No beginner labels indexed

Beginner friendly Everything

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115 open issues indexed

SlogHandler violates several parts of the slog.Handler contract Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

rs/zerolog#787 · Opened Aug 17, 2026
Code Health Audit — 136 findings (94 files) Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

rs/zerolog#773 · 1 comment · 2 reactions · Opened Jun 13, 2026
Issue with log.Ctx and event context Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

rs/zerolog#756 · 2 comments · Opened Feb 21, 2026
question: how to overwrite standard logger to always log as error Open

Difficulty 2/5 1-3 hours Newbie friendliness 25/100

rs/zerolog#728 · 1 comment · Opened Aug 19, 2025
ConsoleWriter mangles JSON order Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

rs/zerolog#727 · 3 comments · Opened Aug 19, 2025
<nil> timestamp when running in docker Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

rs/zerolog#725 · Opened Jul 24, 2025
Zero log becomes slow with file-writer Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

rs/zerolog#723 · 1 comment · Opened Jul 1, 2025
Best way to propagate an error to the top without losing context? Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

rs/zerolog#721 · 1 comment · Opened Jun 9, 2025
Ability to remove certain events from the sampler. Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

rs/zerolog#719 · 1 comment · Opened May 8, 2025
Reset condition in burst sampler Open

Difficulty 1/5 1-3 hours Newbie friendliness 50/100

rs/zerolog#711 · 1 comment · Opened Feb 26, 2025
Global logger logging context value, even tough a key does not exist in the event map. Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

rs/zerolog#710 · 1 reaction · Opened Feb 22, 2025
Get the log level in LogObjectMarshaler Open

Difficulty 5/5 Over a week Newbie friendliness 42/100

rs/zerolog#708 · 2 comments · Opened Jan 21, 2025
Question: should I always use return value of (*Event).Str, (*Event).Uint, etc.? Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

rs/zerolog#707 · 1 comment · Opened Jan 20, 2025
Feat: allow modification of log message formatting? Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

rs/zerolog#697 · 2 reactions · Opened Nov 25, 2024
Support for custom log levels Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

rs/zerolog#686 · 3 comments · 1 reaction · Opened Sep 9, 2024
how to get Event timestamp in hook Run() ? Open

Difficulty 3/5 1-2 days Newbie friendliness 28/100

rs/zerolog#679 · Opened Jul 4, 2024
Support for msgpack encoder Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

rs/zerolog#676 · Opened Jun 13, 2024
Hook after writing Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

rs/zerolog#675 · 1 comment · Opened May 30, 2024
Yu Open

Difficulty 5/5 Over a week Newbie friendliness 10/100

rs/zerolog#673 · 1 reaction · Opened May 29, 2024
Add an option to limit max log's size after escaping Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

rs/zerolog#660 · 4 reactions · Opened Apr 1, 2024
Deep Example Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

rs/zerolog#658 · 1 comment · 1 reaction · Opened Mar 26, 2024
InterfaceMarshalFunc is not called when encoding JSON Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

rs/zerolog#651 · 2 comments · Opened Feb 23, 2024
Fields with `map[string]string` Open

Difficulty 3/5 1-2 days Newbie friendliness 48/100

rs/zerolog#648 · 1 reaction · Opened Feb 8, 2024
Is there a way to obtain the 'buf' from the Event in a hook? Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

rs/zerolog#637 · 2 comments · 2 reactions · Opened Jan 17, 2024
zerolog with two ouputs: create to logging objects or just switch the Output value everytime? Open

Difficulty 2/5 1-3 hours Newbie friendliness 30/100

rs/zerolog#616 · 2 comments · Opened Nov 7, 2023
Confused about usage of Ctx and Logger Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

rs/zerolog#609 · 3 comments · 5 reactions · Opened Oct 24, 2023
MarshalZerologObject is not called on embedded structs Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

rs/zerolog#600 · Opened Oct 14, 2023
Add a dedicated Hook for Fatal calls Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

rs/zerolog#591 · 1 comment · 2 reactions · Opened Sep 28, 2023
Retrieve logger fields from Zerolog event Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

rs/zerolog#587 · 1 comment · 2 reactions · Opened Sep 8, 2023
Amazing log Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

rs/zerolog#585 · 1 comment · Opened Aug 29, 2023
How do I create a standard zerolog.Event I can use as a middleware? Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

rs/zerolog#581 · Opened Aug 18, 2023
The trace message can't send to syslog service by sysloglevelwriter Open

Difficulty 3/5 1-2 days Newbie friendliness 25/100

rs/zerolog#578 · Opened Aug 16, 2023
ErrorHandler Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

rs/zerolog#569 · 2 comments · 1 reaction · Opened Jul 27, 2023
inconsistent semantics on type "Logger" Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

rs/zerolog#563 · 3 comments · 3 reactions · Opened Jul 6, 2023
Include bytes read in `hlog.AccessHandler` middleware Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

rs/zerolog#561 · Opened Jul 5, 2023
please help to resolve race-condition in zerolog Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

rs/zerolog#555 · 3 comments · Opened Jun 13, 2023
Readme/Coverage link is 404 Open

Difficulty 1/5 Under an hour Newbie friendliness 35/100

rs/zerolog#553 · Opened May 24, 2023
Consider making the Stringers function generic? Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

rs/zerolog#551 · 4 comments · 10 reactions · Opened May 7, 2023
Sampled logs used in multiple call point the sampling bucket Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

rs/zerolog#543 · 3 comments · 1 reaction · Opened Apr 20, 2023
how to get a logger context value Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

rs/zerolog#539 · 3 reactions · Opened Apr 12, 2023
Teach ConsoleWriter to do UTC Open

Difficulty 3/5 1-2 days Newbie friendliness 20/100

rs/zerolog#532 · Opened Mar 22, 2023
appends request id over request id. Open

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

rs/zerolog#525 · 2 reactions · Opened Feb 23, 2023
Console output "0216-15:28:03+08:05" Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

rs/zerolog#524 · 1 comment · Opened Feb 16, 2023
How to set timezone when using ConsoleWriter? Open

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

rs/zerolog#521 · 3 comments · 1 reaction · Opened Feb 10, 2023
Loop error when write log to kafka fail Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

rs/zerolog#513 · 1 reaction · Opened Jan 6, 2023
Output from Logger.Write always has a nil level Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

rs/zerolog#508 · 6 comments · 1 reaction · Opened Dec 5, 2022
Double quotes are escaped (while using ConsoleWriter) Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

rs/zerolog#504 · 2 comments · Opened Nov 5, 2022
Console writer does not use defined timestamp formatter Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

rs/zerolog#494 · 2 comments · Opened Oct 13, 2022
[question] How to access `with` fields inside a hook Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

rs/zerolog#493 · 8 comments · 47 reactions · Opened Oct 11, 2022
Set / modify time format per logger instance Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

rs/zerolog#487 · 2 comments · Opened Oct 2, 2022

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