# open-telemetry/opentelemetry-demo

This repository contains the OpenTelemetry Astronomy Shop, a microservice-based distributed system intended to illustrate the implementation of OpenTelemetry in a near real-world environment.

Repository: https://github.com/open-telemetry/opentelemetry-demo
Canonical: https://ross.abutalabs.com/products/opentelemetry-demo
Homepage: https://opentelemetry.io/docs/demo/
Language: TypeScript
License: Apache-2.0
License Family: permissive
Topics: jaeger, opentelemetry, opentelemetry-collector, opentelemetry-dotnet, opentelemetry-erlang, opentelemetry-go, opentelemetry-java-agent, opentelemetry-javascript, opentelemetry-python, opentelemetry-rust, prometheus, demo
Last push: 2026-08-25T06:55:01+00:00

## Health v2 (maintenance only)
Score: 97/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 94, longevity 100
- inputs: {"age_days": 1590, "days_push": 8, "days_rel": 40, "gap_med": 16, "n_releases_24m": 10}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3303, forks 7056 (observed 2026-08-28T04:07:55.716218+00:00)

## What it is
The OpenTelemetry Astronomy Shop, a microservice-based distributed e-commerce demo system illustrating OpenTelemetry instrumentation across many languages. It serves as a realistic testbed for vendors, tooling authors, and OpenTelemetry contributors.

## Use cases
- learn opentelemetry instrumentation with a real example
- demo distributed tracing in a microservices app
- test observability vendor integrations against a reference app
- explore traces and metrics in jaeger and prometheus
- try opentelemetry sdk features across multiple languages
- run a sample microservices app in docker or kubernetes
- practice debugging distributed systems with telemetry data

## When to choose
- you want a realistic, multi-language reference system for learning or demonstrating OpenTelemetry
- you need a testbed to validate observability tooling or vendor integrations
- you want to see how instrumentation works in Go, Java, Python, Rust, .NET, and more in one system

## When to avoid
- you need a production-ready e-commerce platform rather than a demo
- you want a minimal example rather than a full multi-service deployment
- you are not interested in observability or OpenTelemetry specifically

## Facets
- artifact type: application
- maturity: active
- function: monitoring, tracing, microservices, developer-tools
- domain: monitoring, microservices, developer-tools
- platform: cloud, self-hosted, cross-platform
- tags: opentelemetry, observability, demo, distributed-tracing, jaeger, prometheus, instrumentation, sample-application, devops, docker, kubernetes

## Member repositories
- open-telemetry/opentelemetry-demo (main) score 97

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:55.716218+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 2026-08-30T07:22:39.488445+00:00, confidence not recorded.
  - readme: https://github.com/open-telemetry/opentelemetry-demo (fetched 2026-08-28T04:07:55.716218+00:00, sha 56100e695d21)
  - homepage: https://opentelemetry.io/docs/demo/ (fetched 2026-08-29T09:35:43.432019+00:00, sha a6b4100258df)
  - site_page: https://opentelemetry.io/docs (fetched 2026-08-29T09:35:43.441030+00:00, sha 06566227bba9)
  - site_page: https://opentelemetry.io/bn/docs/demo (fetched 2026-08-29T09:35:43.443131+00:00, sha 564f24fc99ee)
  - site_page: https://opentelemetry.io/es/docs/demo (fetched 2026-08-29T09:35:43.445107+00:00, sha 188fb0ed3578)
  - site_page: https://opentelemetry.io/fr/docs/demo (fetched 2026-08-29T09:35:43.447152+00:00, sha 86d9719df5ae)
  - site_page: https://opentelemetry.io/ja/docs/demo (fetched 2026-08-29T09:35:43.448926+00:00, sha 9698adc30dcf)
  - site_page: https://opentelemetry.io/ko/docs/demo (fetched 2026-08-29T09:35:43.450747+00:00, sha 9e2b9226966c)
  - site_page: https://opentelemetry.io/pl/docs/demo (fetched 2026-08-29T09:35:43.452292+00:00, sha 1dba921f5296)
  - site_page: https://opentelemetry.io/pt/docs/demo (fetched 2026-08-29T09:35:43.453775+00:00, sha 98d21a73ace4)
- Data as of 2026-08-30T08:39:29.467469+00:00.