# quantum-elixir/quantum-core

:watch: Cron-like job scheduler for Elixir

Repository: https://github.com/quantum-elixir/quantum-core
Canonical: https://ross.abutalabs.com/products/quantum-core
Homepage: https://hexdocs.pm/quantum/
Language: Elixir
License: Apache-2.0
License Family: permissive
Topics: elixir, timezone, cron, crontab, crontab-format, scheduler, quantum
Last push: 2026-08-17T11:16:30+00:00

## Health v2 (maintenance only)
Score: 67/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 98, release rhythm 8, longevity 100
- inputs: {"age_days": 4146, "days_push": 16, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2416, forks 153 (observed 2026-08-28T04:06:50.347343+00:00)

## What it is
Quantum is a cron-like job scheduler library for Elixir applications. It lets developers define recurring jobs using crontab syntax with timezone support, integrated into the OTP supervision tree.

## Use cases
- run a task every minute in my Elixir app
- schedule nightly database backups
- execute periodic cleanup jobs with cron syntax
- run scheduled jobs in specific timezones
- replace system cron with in-app job scheduling

## When to choose
- you need cron-style recurring jobs inside an Elixir/OTP application
- you want timezone-aware scheduling configured in code or config files
- you want jobs supervised as part of your application's supervision tree

## When to avoid
- you need distributed job locking across multiple nodes out of the box
- you need a standalone scheduler outside an Elixir application
- you need complex workflow DAGs rather than simple cron schedules

## Facets
- artifact type: library
- maturity: stable
- function: scheduling, workflow-automation
- domain: backend, developer-tools
- platform: elixir, jvm
- tags: cron, job-scheduler, timezone-support, crontab-format, automation

## Member repositories
- quantum-elixir/quantum-core (main) score 67

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:50.347343+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 2026-08-30T02:33:09.695700+00:00, confidence not recorded.
  - readme: https://github.com/quantum-elixir/quantum-core (fetched 2026-08-28T04:06:50.347343+00:00, sha 7157ea286c4a)
  - homepage: https://hexdocs.pm/quantum/ (fetched 2026-08-29T10:13:44.812451+00:00, sha 98e9c89d4a21)
- Data as of 2026-08-30T08:39:29.467469+00:00.