# rcrowley/goagain

Zero-downtime restarts in Go

Repository: https://github.com/rcrowley/goagain
Canonical: https://ross.abutalabs.com/products/goagain
Language: Go
License: NOASSERTION
License Family: other
Last push: 2019-02-13T23:18:41+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 5485, "days_push": 2758, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2088, forks 137 (observed 2026-08-28T04:06:12.142197+00:00)

## What it is
A Go library providing primitives for zero-downtime restarts of applications that accept connections via TCP or Unix listeners. It implements Nginx/Unicorn-style restart strategies using execve and SIGUSR2 signaling.

## Use cases
- restart a Go server without dropping connections
- graceful shutdown of a TCP server in Go
- zero-downtime deployments for Go applications
- hot-reload a Go web server on code updates
- hand off listening sockets between old and new processes

## When to choose
- you run a custom Go TCP/Unix-socket server and need zero-downtime restarts
- you want Nginx/Unicorn-style restart semantics in Go
- you use systemd or Upstart and need graceful process handoff

## When to avoid
- you use a framework with built-in graceful restart support
- your application doesn't accept connections from a TCP or Unix listener
- you need a maintained solution - the project has had no releases since 2019

## Facets
- artifact type: library
- maturity: maintenance
- function: http-server, concurrency, deployment
- domain: developer-tools, backend
- platform: go
- tags: zero-downtime, graceful-restart, graceful-shutdown, signal-handling, tcp-listener, unix-socket, devops, linux

## Member repositories
- rcrowley/goagain (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:12.142197+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T02:55:42.850875+00:00, confidence not recorded.
  - readme: https://github.com/rcrowley/goagain (fetched 2026-08-28T04:06:12.142197+00:00, sha ce4869b51189)
- Data as of 2026-08-30T08:39:29.467469+00:00.