# dragonflyoss/nydus

Nydus - a reliable, high-performance on-demand load filesytem framework for container image and data distribution.

Repository: https://github.com/dragonflyoss/nydus
Canonical: https://ross.abutalabs.com/products/nydus
Homepage: https://nydus.dev/
Language: Rust
License: Apache-2.0
License Family: permissive
Topics: container, container-image, accelerator, snapshotter, containerd, docker, filesystem, storage
Last push: 2026-08-26T10:47:04+00:00

## Health v2 (maintenance only)
Score: 94/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 83, longevity 100
- inputs: {"age_days": 2175, "days_push": 7, "days_rel": 33, "gap_med": 32.0, "n_releases_24m": 15}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1644, forks 271 (observed 2026-08-28T04:05:16.082300+00:00)

## What it is
Nydus is a Rust-based content-addressable filesystem framework implementing the RAFS format to accelerate container image and data distribution with on-demand chunk-level loading. It integrates with containerd, Docker, and Kubernetes via snapshotter plugins to dramatically reduce container cold-start time, storage, and network bandwidth.

## Use cases
- speed up container cold start with on-demand image pulling
- reduce container image storage and network bandwidth costs
- convert OCI images to accelerated Nydus format
- run containers with lazy-loading filesystem in Kubernetes
- deduplicate image chunks across layers and images
- verify image data integrity and detect supply chain attacks at runtime
- accelerate serverless function code package loading

## When to choose
- you need second-level container startup for large images
- you run Kubernetes or containerd at scale and want faster pulls
- you want chunk-level deduplication across images
- you need POSIX-compatible on-demand loading via EROFS, FUSE, or VirtioFS

## When to avoid
- you only deploy tiny images where pull time is negligible
- your environment cannot install a custom snapshotter or kernel EROFS support
- you need a fully standard OCI-only workflow without extra tooling

## Facets
- artifact type: framework
- maturity: stable
- function: file-system, container-runtime, caching, compression, security, developer-tools
- domain: cloud-computing, microservices, self-hosted
- platform: rust, cloud, self-hosted
- tags: container-image, on-demand-loading, image-acceleration, rafs, erofs, fuse, snapshotter, oci-images, lazy-pull, chunk-deduplication, containers, devops, linux, docker, kubernetes

## Member repositories
- dragonflyoss/nydus (main) score 94

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:16.082300+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 2026-08-30T03:45:49.044528+00:00, confidence not recorded.
  - readme: https://github.com/dragonflyoss/nydus (fetched 2026-08-28T04:05:16.082300+00:00, sha d5a4b90c71f6)
  - homepage: https://nydus.dev/ (fetched 2026-08-29T11:18:57.910535+00:00, sha 464cfd5dd34c)
- Data as of 2026-08-30T08:39:29.467469+00:00.