# zhaofengli/attic

Multi-tenant Nix Binary Cache

Repository: https://github.com/zhaofengli/attic
Canonical: https://ross.abutalabs.com/products/attic
Homepage: https://docs.attic.rs
Language: Rust
License: NOASSERTION
License Family: other
Topics: binary-cache, nix, nixos
Last push: 2026-08-22T18:43:24+00:00

## Health v2 (maintenance only)
Score: 76/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 35, longevity 95
- inputs: {"age_days": 1341, "days_push": 11, "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 2035, forks 179 (observed 2026-08-28T04:06:07.914626+00:00)

## What it is
Attic is a self-hostable, multi-tenant Nix binary cache server backed by S3-compatible storage, written in Rust. It provides global deduplication, managed on-the-fly signing, LRU garbage collection, and can be deployed to serverless platforms or a single machine.

## Use cases
- self-host a private nix binary cache
- share a nix cache with friends or coworkers
- deduplicate nix store paths across multiple caches
- push nix build results to a remote cache
- run a nix cache on s3-compatible storage
- garbage collect unused nix store paths

## When to choose
- you need a multi-tenant nix cache with untrusting tenants
- you want server-side managed signing keys
- you want to deploy to serverless platforms like fly.io or use S3 storage
- you need global deduplication and LRU garbage collection

## When to avoid
- you need a battle-tested, production-hardened cache server
- you want a simple single-user cache without multi-tenancy
- you need features beyond the early prototype stage

## Facets
- artifact type: service
- maturity: experimental
- function: caching, self-hosted, object-storage, cli, serverless
- domain: developer-tools, self-hosted, infrastructure-as-code
- platform: self-hosted, serverless, rust
- tags: nix, binary-cache, nixos, s3, multi-tenant, garbage-collection, content-addressed-storage, devops, linux, macos, docker

## Member repositories
- zhaofengli/attic (main) score 76

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:07.914626+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 2026-08-30T02:59:23.059154+00:00, confidence not recorded.
  - readme: https://github.com/zhaofengli/attic (fetched 2026-08-28T04:06:07.914626+00:00, sha 78617e6177da)
  - homepage: https://docs.attic.rs (fetched 2026-08-29T10:38:58.559310+00:00, sha efe25da722c9)
  - registry_crates: https://crates.io/api/v1/crates/attic (fetched 2026-08-29T10:38:58.568975+00:00, sha 19d430eefd02)
- Data as of 2026-08-30T08:39:29.467469+00:00.