inconshreveable/log15
Structured, composable logging for Go observed · 2026-08-28
Health v2 · maintenance only
69/100
- Activity 82
- Release rhythm 35
- Longevity 100
Flags: no_releases no_license
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 4489
- days_rel: n/a
- days_push: 112
- n_releases_24m: 0
Adoption not part of the score
1104 stars · 143 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
log15 is a structured, composable logging library for Go that promotes key/value pair logging with child loggers and a flexible Handler interface. It offers built-in output to files, streams, syslog, and the network, and now provides a v3 module with a compatibility layer for migration.
Use cases
- add structured key/value logging to a Go application
- create child loggers with inherited context
- log to files, syslog, or the network in Go
- build custom logging pipelines with a small Handler API
- migrate legacy log15 code to a Go-modules-compatible v3
When to choose
- you want simple, opinionated structured logging in Go with minimal dependencies
- you need composable handlers for forking, buffering, or failover of log records
- you have existing log15 code and want to move to the v3 module
When to avoid
- you are starting a new Go project - the standard library's log/slog is likely a better fit
- you need caller file/stack information, which was removed in v3
- you need color terminal output via the term subpackage, which no longer exists in v3
Facets
library · maturity maintenance
logging developer-tools developer-tools backend go cross-platform structured-logging golang key-value-logging handler-based slog-alternative
6 sources
- readme: https://github.com/inconshreveable/log15 · fetched 2026-08-28 · 4293eb6abeb0
- homepage: https://godoc.org/github.com/inconshreveable/log15 · fetched 2026-08-29 · 7549055754f6
- site_page: https://pkg.go.dev/about · fetched 2026-08-29 · 757852027879
- site_page: https://go.dev/about · fetched 2026-08-29 · 8b6453863a90
- site_page: https://pkg.go.dev/github.com/inconshreveable/log15 · fetched 2026-08-29 · 46d21f3dfd1f
- site_page: https://go.dev/project · fetched 2026-08-29 · d5ca00bb378b
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| inconshreveable/log15 | main | 69 |
For agents
markdown · JSON · MCP: product_card(name="inconshreveable/log15")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem