https://github.com/elastisys/welkin-simple-user-demo

Application to test and demonstrate Welkin's features
https://github.com/elastisys/welkin-simple-user-demo

Last synced: about 2 months ago
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Application to test and demonstrate Welkin's features

• Host: GitHub
• URL: https://github.com/elastisys/welkin-simple-user-demo
• Owner: elastisys
• License: apache-2.0
• Created: 2026-01-20T10:35:21.000Z (4 months ago)
• Default Branch: main
• Last Pushed: 2026-01-23T10:54:56.000Z (4 months ago)
• Last Synced: 2026-01-24T03:20:17.095Z (4 months ago)
• Language: JavaScript
• Size: 170 KB
• Stars: 0
• Watchers: 0
• Forks: 0
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE
  • Codeowners: CODEOWNERS

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README

          
# Welkin Simple User Demo

This repository serves as a hands-on companion to the [Welkin Documentation](https://elastisys.io).

## Overview

To make the most out of Welkin, this repository demonstrates an application which features:

- some REST endpoints: [NodeJS](user-demo/app.js#L38-L40), [.NET](user-demo-dotnet/Program.cs#L19-L41);

- structured logging: [NodeJS](user-demo/app.js#L18-L33), [.NET](user-demo-dotnet/Program.cs#L45);

- metrics endpoint: [NodeJS](user-demo/app.js#L34), [.NET](user-demo-dotnet/Program.cs#L44);

- Dockerfile, which showcases:

    - How to run as non-root: [NodeJS](user-demo/Dockerfile#L12), [.NET](user-demo-dotnet/Dockerfile#L21);

- [Helm Chart](user-demo/deploy/welkin-user-demo), which showcases:

    - [HTTPS Ingresses](user-demo/deploy/welkin-user-demo/values.yaml#L37-L43);

    - [ServiceMonitor for metrics collection](user-demo/deploy/welkin-user-demo/templates/servicemonitor.yaml);

    - [PrometheusRule for alerting](user-demo/deploy/welkin-user-demo/templates/prometheusrule.yaml);

    - [topologySpreadConstraints for tolerating single Node or single Zone failure](user-demo/deploy/welkin-user-demo/values.yaml#L84-L96);

    - [resources for capacity management](user-demo/deploy/welkin-user-demo/values.yaml#L54-L63);

    - [NetworkPolicies for network segmentation](user-demo/deploy/welkin-user-demo/values.yaml#L98-L109);

- [Grafana dashboards for metrics visualization](user-demo/deploy/welkin-user-demo/dashboards);

- [script for local development and testing](user-demo/scripts);

Bonus:

- [ability to make it crash](user-demo/routes/crash.js) (`/crash`).

## 📜 Licensing Information

All source files in this repository are licensed under the Apache License, Version 2.0 unless otherwise stated.

See the [LICENSE](LICENSE) file for full details.