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---
---
<html lang="en">
<head>
<meta charset="utf-8" />
<link rel="icon" type="image/svg+xml" href="/favicon.svg" />
<meta name="viewport" content="width=device-width" />
<meta name="generator" content={Astro.generator} />
<title>Astro + Cloudflare Durable Objects Demo</title>
<style>
body {
font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
max-width: 800px;
margin: 0 auto;
padding: 2rem;
line-height: 1.6;
background: #f8fafc;
color: #334155;
}
.container {
background: white;
padding: 2rem;
border-radius: 12px;
box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
}
h1 {
color: #1e293b;
margin-bottom: 1rem;
font-size: 2.5rem;
}
.subtitle {
color: #64748b;
margin-bottom: 2rem;
font-size: 1.1rem;
}
.counter-section {
background: #f1f5f9;
padding: 2rem;
border-radius: 8px;
margin: 2rem 0;
text-align: center;
}
.counter-display {
font-size: 3rem;
font-weight: bold;
color: #3b82f6;
margin: 1rem 0;
}
.button-group {
display: flex;
gap: 1rem;
justify-content: center;
flex-wrap: wrap;
}
button {
background: #3b82f6;
color: white;
border: none;
padding: 0.75rem 1.5rem;
border-radius: 6px;
font-size: 1rem;
cursor: pointer;
transition: background-color 0.2s;
}
button:hover {
background: #2563eb;
}
button:disabled {
background: #94a3b8;
cursor: not-allowed;
}
.reset-btn {
background: #ef4444;
}
.reset-btn:hover {
background: #dc2626;
}
.status {
margin-top: 1rem;
padding: 0.75rem;
border-radius: 6px;
font-size: 0.9rem;
}
.status.loading {
background: #fef3c7;
color: #92400e;
}
.status.error {
background: #fee2e2;
color: #b91c1c;
}
.status.success {
background: #dcfce7;
color: #166534;
}
.explanation {
background: #f8fafc;
padding: 1.5rem;
border-left: 4px solid #3b82f6;
margin: 2rem 0;
}
.explanation h3 {
margin-top: 0;
color: #1e293b;
}
code {
background: #e2e8f0;
padding: 0.25rem 0.5rem;
border-radius: 4px;
font-family: 'Monaco', 'Consolas', monospace;
font-size: 0.9rem;
}
</style>
</head>
<body>
<div class="container">
<h1>Astro + Cloudflare Durable Objects</h1>
<p class="subtitle">A persistent counter demonstrating Durable Objects with Astro and Cloudflare Workers</p>
<div class="counter-section">
<h2>Global Counter</h2>
<div class="counter-display" id="counterValue">-</div>
<div class="button-group">
<button id="getBtn">Get Counter</button>
<button id="incrementBtn">Increment</button>
<button id="resetBtn" class="reset-btn">Reset</button>
</div>
<div id="status" class="status" style="display: none;"></div>
</div>
<div class="explanation">
<h3>How it works</h3>
<p>This demo showcases a <strong>Cloudflare Durable Object</strong> that maintains a persistent counter. The counter state survives across requests, deployments, and server restarts.</p>
<h4>API Endpoints:</h4>
<ul>
<li><code>GET /api/counter</code> - Retrieve the current counter value</li>
<li><code>POST /api/counter</code> - Increment the counter by 1</li>
<li><code>POST /api/counter?action=reset</code> - Reset the counter to 0</li>
</ul>
<h4>Key Features:</h4>
<ul>
<li><strong>Persistent Storage:</strong> Counter value persists across deployments</li>
<li><strong>Global State:</strong> Single counter instance shared across all requests</li>
<li><strong>Edge Computing:</strong> Runs at Cloudflare's edge locations</li>
<li><strong>Real-time Updates:</strong> Immediate consistency for all operations</li>
</ul>
</div>
</div>
<script>
const counterValue = document.getElementById('counterValue');
const getBtn = document.getElementById('getBtn');
const incrementBtn = document.getElementById('incrementBtn');
const resetBtn = document.getElementById('resetBtn');
const status = document.getElementById('status');
function showStatus(message, type = 'loading') {
status.textContent = message;
status.className = `status ${type}`;
status.style.display = 'block';
if (type !== 'loading') {
setTimeout(() => {
status.style.display = 'none';
}, 3000);
}
}
function setButtonsDisabled(disabled) {
getBtn.disabled = disabled;
incrementBtn.disabled = disabled;
resetBtn.disabled = disabled;
}
async function getCounter() {
try {
setButtonsDisabled(true);
showStatus('Getting counter value...', 'loading');
const response = await fetch('/api/counter');
const data = await response.json();
if (response.ok) {
counterValue.textContent = data.counter;
showStatus(`Counter retrieved: ${data.counter}`, 'success');
} else {
throw new Error(data.error || 'Failed to get counter');
}
} catch (error) {
showStatus(`Error: ${error.message}`, 'error');
counterValue.textContent = 'Error';
} finally {
setButtonsDisabled(false);
}
}
async function incrementCounter() {
try {
setButtonsDisabled(true);
showStatus('Incrementing counter...', 'loading');
const response = await fetch('/api/counter', {
method: 'POST'
});
const data = await response.json();
if (response.ok) {
counterValue.textContent = data.counter;
showStatus(`Counter incremented to: ${data.counter}`, 'success');
} else {
throw new Error(data.error || 'Failed to increment counter');
}
} catch (error) {
showStatus(`Error: ${error.message}`, 'error');
} finally {
setButtonsDisabled(false);
}
}
async function resetCounter() {
try {
setButtonsDisabled(true);
showStatus('Resetting counter...', 'loading');
const response = await fetch('/api/counter?action=reset', {
method: 'POST'
});
const data = await response.json();
if (response.ok) {
counterValue.textContent = data.counter;
showStatus('Counter reset to 0', 'success');
} else {
throw new Error(data.error || 'Failed to reset counter');
}
} catch (error) {
showStatus(`Error: ${error.message}`, 'error');
} finally {
setButtonsDisabled(false);
}
}
getBtn.addEventListener('click', getCounter);
incrementBtn.addEventListener('click', incrementCounter);
resetBtn.addEventListener('click', resetCounter);
// Load initial counter value
getCounter();
</script>
</body>
</html>
|
