# nats-io/nats-streaming-server

NATS Streaming System Server

Repository: https://github.com/nats-io/nats-streaming-server
Canonical: https://ross.abutalabs.com/products/nats-streaming-server
Homepage: https://nats.io
Language: Go
License: Apache-2.0
License Family: permissive
Archived: true
Last push: 2024-04-01T16:59:27+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 3814, "days_push": 884, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: archived
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2522, forks 292 (observed 2026-08-28T04:06:58.376564+00:00)

## What it is
NATS Streaming Server (STAN) is a lightweight, high-performance reliable streaming platform built on top of the NATS messaging system, providing persistent pub/sub with at-least-once delivery. It is officially deprecated in favor of NATS JetStream, with only critical bug and security fixes applied.

## Use cases
- run a persistent message queue on top of NATS
- stream events between microservices with guaranteed delivery
- replace legacy STAN deployments or migrate them to JetStream
- self-host a lightweight pub/sub streaming server
- buffer and replay messages for event-driven architectures

## When to choose
- you maintain an existing NATS Streaming deployment and need the final supported releases
- you need a minimal, single-binary streaming layer for a legacy NATS-based system

## When to avoid
- you are starting a new project - use NATS JetStream instead
- you need long-term support or new features, since the project is deprecated
- you need modern persistence, exactly-once semantics, or KV/object storage built into messaging

## Facets
- artifact type: service
- maturity: maintenance
- function: message-queue, streaming, http-server
- domain: microservices, cloud-computing
- platform: windows, go, self-hosted
- tags: nats, stan, pub-sub, event-streaming, deprecated, jetstream-successor, messaging, linux, macos, docker

## Member repositories
- nats-io/nats-streaming-server (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:58.376564+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 2026-08-30T02:25:48.089845+00:00, confidence not recorded.
  - readme: https://github.com/nats-io/nats-streaming-server (fetched 2026-08-28T04:06:58.376564+00:00, sha 3cd833a8a848)
  - homepage: https://nats.io (fetched 2026-08-29T10:08:03.882290+00:00, sha 5e473e44be25)
  - site_page: https://nats.io/about (fetched 2026-08-29T10:08:03.885027+00:00, sha 8d4a983ed0a7)
  - site_page: https://docs.nats.io (fetched 2026-08-29T10:08:03.886949+00:00, sha 4787c0141dc2)
  - site_page: https://docs.nats.io/running-a-nats-service/introduction/installation (fetched 2026-08-29T10:08:03.888543+00:00, sha 99c366b7677a)
- Data as of 2026-08-30T08:39:29.467469+00:00.