Standby System Visualizer: Interactive High Availability Architecture Explorer

Explore and understand cold, warm, and hot standby configurations with our interactive visualization tool. Perfect for developers, architects, and students learning about high availability systems.

5 min read

1/18/2025

development

next.js

open-source

server-architecture

Introducing the Standby System Visualization Tool: A Deep Dive into High Availability Architectures

In today’s digital landscape, ensuring high availability and fault tolerance for critical systems is more important than ever. As a developer or system architect, understanding the intricacies of standby systems is crucial. That’s why I’m excited to introduce the Standby System Visualization Tool – an interactive, educational platform designed to demystify the concepts of cold, warm, and hot standby configurations.

What is the Standby System Visualization Tool?

The Standby System Visualization Tool is a web-based application that provides a dynamic, visual representation of different standby system architectures. It allows users to explore and interact with various standby configurations, helping them understand the behavior, trade-offs, and best practices associated with each approach.

Key Features

1. Interactive Visualization: The heart of the tool is its interactive visualization component. Users can see real-time changes in system behavior as they adjust parameters or simulate different scenarios.

2. Multiple Standby Types: The tool covers three primary standby configurations:

Cold Standby: Secondary server is offline and only starts when the primary fails.
Warm Standby: Secondary server is running but not processing requests until promoted.
Hot Standby: Both servers are active and processing requests simultaneously.

3. Customizable Scenarios: Users can create custom scenarios by toggling server status, health, and standby type. This flexibility allows for a wide range of learning opportunities and “what-if” analyses.

4. Performance Metrics: The tool provides simulated performance metrics, giving users insight into how different configurations might impact response times and throughput.

5. Cost Estimation: A built-in cost estimation calculator helps users understand the financial implications of different standby configurations.

6. Multi-Region Disaster Recovery: The tool includes a multi-region scenario, allowing users to explore more complex, geographically distributed architectures.

Educational Value

One of the primary goals of this tool is to serve as an educational resource. Whether you’re a student learning about high availability for the first time, a developer looking to deepen your understanding of system architecture, or an experienced architect exploring new configurations, this tool offers valuable insights.

The visual nature of the tool makes it easier to grasp complex concepts. By interacting with the system and seeing the results in real-time, users can develop a more intuitive understanding of how standby systems behave under different conditions.

Use Cases

1. Learning and Training: Perfect for individual learning or as a teaching aid in educational settings.

2. Architecture Planning: Helps teams visualize and discuss different high availability strategies.

3. Disaster Recovery Planning: Allows organizations to simulate various failure scenarios and plan their response.

4. Cost-Benefit Analysis: The cost estimation feature can help in making informed decisions about infrastructure investments.

Hosting on GitHub pages

This is also the first website I host directly on GitHub, which led to a bit of confusion at the beginning but after all it worked pretty fast.

First of all I had to make sure, that GitHub pages was active in the settings of my GitHub repo, after that I simply added a workflow which on push automatically builds and publishes the new website.

name: Deploy Next.js site to Pages

on:
    # Runs on pushes targeting the default branch
    push:
        branches: ["main"]

    # Allows you to run this workflow manually from the Actions tab
    workflow_dispatch:

permissions:
    contents: read
    pages: write
    id-token: write

concurrency:
    group: "pages"
    cancel-in-progress: false

jobs:
    # Build job
    build:
        runs-on: ubuntu-latest
        steps:
            - name: Checkout
              uses: actions/checkout@v4
            - name: Detect package manager
              id: detect-package-manager
              run: |
                  if [ -f "${{ github.workspace }}/yarn.lock" ]; then
                    echo "manager=yarn" >> $GITHUB_OUTPUT
                    echo "command=install" >> $GITHUB_OUTPUT
                    echo "runner=yarn" >> $GITHUB_OUTPUT
                    exit 0
                  elif [ -f "${{ github.workspace }}/package.json" ]; then
                    echo "manager=npm" >> $GITHUB_OUTPUT
                    echo "command=ci" >> $GITHUB_OUTPUT
                    echo "runner=npx --no-install" >> $GITHUB_OUTPUT
                    exit 0
                  else
                    echo "Unable to determine package manager"
                    exit 1
                  fi
            - name: Setup Node
              uses: actions/setup-node@v4
              with:
                  node-version: "20"
                  cache: ${{ steps.detect-package-manager.outputs.manager }}
            - name: Setup Pages
              uses: actions/configure-pages@v5
              with:
                  # Automatically inject basePath in your Next.js configuration file and disable
                  # server side image optimization (https://nextjs.org/docs/api-reference/next/image#unoptimized).
                  #
                  # You may remove this line if you want to manage the configuration yourself.
                  static_site_generator: next
            - name: Restore cache
              uses: actions/cache@v4
              with:
                  path: |
                      .next/cache
                  # Generate a new cache whenever packages or source files change.
                  key: ${{ runner.os }}-nextjs-${{ hashFiles('**/package-lock.json', '**/yarn.lock') }}-${{ hashFiles('**.[jt]s', '**.[jt]sx') }}
                  # If source files changed but packages didn't, rebuild from a prior cache.
                  restore-keys: |
                      ${{ runner.os }}-nextjs-${{ hashFiles('**/package-lock.json', '**/yarn.lock') }}-
            - name: Install dependencies
              run: ${{ steps.detect-package-manager.outputs.manager }} ${{ steps.detect-package-manager.outputs.command }}
            - name: Build with Next.js
              run: ${{ steps.detect-package-manager.outputs.runner }} next build
            - name: Upload artifact
              uses: actions/upload-pages-artifact@v3
              with:
                  path: ./out

    # Deployment job
    deploy:
        environment:
            name: github-pages
            url: ${{ steps.deployment.outputs.page_url }}
        runs-on: ubuntu-latest
        needs: build
        steps:
            - name: Deploy to GitHub Pages
              id: deployment
              uses: actions/deploy-pages@v4

Looking Forward

The Standby System Visualization Tool is an ongoing project, and I’m excited about its potential to evolve and grow. Future enhancements might include more complex scenarios, additional performance metrics, and integration with real-world data sources.

I invite you to try out the tool, explore its features, and let me know your thoughts. Whether you’re using it for learning, teaching, or planning, I hope you find it as valuable and insightful as I do.

Check out the Standby System Visualization Tool on GitHub and feel free to contribute or provide feedback. Let’s work together to make high availability concepts more accessible and understandable for everyone in the tech community!