📄 tanstack/pacer/latest/docs/framework/solid/examples/rateLimit
File: rateLimit.md | Updated: 11/15/2025
Source: https://tanstack.com/pacer/latest/docs/framework/solid/examples/rateLimit
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Solid Example: RateLimit
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import { createSignal } from 'solid-js'
import { render } from 'solid-js/web'
import { rateLimit } from '@tanstack/solid-pacer/rate-limiter'
function App1() {
const [windowType, setWindowType] = createSignal<'fixed' | 'sliding'>('fixed')
// Use your state management library of choice
const [instantCount, setInstantCount] = createSignal(0)
const [rateLimitedCount, setRateLimitedCount] = createSignal(0)
// Create rate-limited setter function - Stable reference required!
const rateLimitedSetCount = rateLimit(setRateLimitedCount, {
limit: 5,
window: 5000,
windowType: windowType(),
onReject: (rateLimiter) =>
console.log(
'Rejected by rate limiter',
rateLimiter.getMsUntilNextWindow(),
),
})
function increment() {
// this pattern helps avoid common bugs with stale closures and state
setInstantCount((c) => {
const newInstantCount = c + 1 // common new value for both
rateLimitedSetCount(newInstantCount) // rate-limited state update
return newInstantCount // instant state update
})
}
return (
<div>
<h1>TanStack Pacer rateLimit Example 1</h1>
<div style={{ display: 'grid', gap: '0.5rem', 'margin-bottom': '1rem' }}>
<label>
<input
type="radio"
name="windowType"
value="fixed"
checked={windowType() === 'fixed'}
onChange={() => setWindowType('fixed')}
/>
Fixed Window
</label>
<label>
<input
type="radio"
name="windowType"
value="sliding"
checked={windowType() === 'sliding'}
onChange={() => setWindowType('sliding')}
/>
Sliding Window
</label>
</div>
<table>
<tbody>
<tr>
<td>Instant Count:</td>
<td>{instantCount()}</td>
</tr>
<tr>
<td>Rate Limited Count:</td>
<td>{rateLimitedCount()}</td>
</tr>
</tbody>
</table>
<div>
<button onClick={increment}>Increment</button>
</div>
</div>
)
}
function App2() {
const [windowType, setWindowType] = createSignal<'fixed' | 'sliding'>('fixed')
const [text, setText] = createSignal('')
const [rateLimitedText, setRateLimitedText] = createSignal('')
// Create rate-limited setter function - Stable reference required!
const rateLimitedSetText = rateLimit(setRateLimitedText, {
limit: 5,
window: 5000,
windowType: windowType(),
onReject: (rateLimiter) =>
console.log(
'Rejected by rate limiter',
rateLimiter.getMsUntilNextWindow(),
),
})
function handleTextChange(e: Event) {
const target = e.target as HTMLInputElement
const newValue = target.value
setText(newValue)
rateLimitedSetText(newValue)
}
return (
<div>
<h1>TanStack Pacer rateLimit Example 2</h1>
<div style={{ display: 'grid', gap: '0.5rem', 'margin-bottom': '1rem' }}>
<label>
<input
type="radio"
name="windowType2"
value="fixed"
checked={windowType() === 'fixed'}
onChange={() => setWindowType('fixed')}
/>
Fixed Window
</label>
<label>
<input
type="radio"
name="windowType2"
value="sliding"
checked={windowType() === 'sliding'}
onChange={() => setWindowType('sliding')}
/>
Sliding Window
</label>
</div>
<div>
<input
autofocus
type="search"
value={text()}
onInput={handleTextChange}
placeholder="Type text (rate limited to 3 updates per 5 seconds)..."
style={{ width: '100%' }}
/>
</div>
<table>
<tbody>
<tr>
<td>Instant Text:</td>
<td>{text()}</td>
</tr>
<tr>
<td>Rate Limited Text:</td>
<td>{rateLimitedText()}</td>
</tr>
</tbody>
</table>
</div>
)
}
function App3() {
const [windowType, setWindowType] = createSignal<'fixed' | 'sliding'>('fixed')
const [currentValue, setCurrentValue] = createSignal(50)
const [rateLimitedValue, setRateLimitedValue] = createSignal(50)
// Create rate-limited setter function - Stable reference required!
const rateLimitedSetValue = rateLimit(setRateLimitedValue, {
limit: 20,
window: 2000,
windowType: windowType(),
onReject: (rateLimiter) =>
console.log(
'Rejected by rate limiter',
rateLimiter.getMsUntilNextWindow(),
),
})
function handleRangeChange(e: Event) {
const target = e.target as HTMLInputElement
const newValue = parseInt(target.value, 10)
setCurrentValue(newValue)
rateLimitedSetValue(newValue)
}
return (
<div>
<h1>TanStack Pacer rateLimit Example 3</h1>
<div style={{ display: 'grid', gap: '0.5rem', 'margin-bottom': '1rem' }}>
<label>
<input
type="radio"
name="windowType3"
value="fixed"
checked={windowType() === 'fixed'}
onChange={() => setWindowType('fixed')}
/>
Fixed Window
</label>
<label>
<input
type="radio"
name="windowType3"
value="sliding"
checked={windowType() === 'sliding'}
onChange={() => setWindowType('sliding')}
/>
Sliding Window
</label>
</div>
<div style={{ 'margin-bottom': '20px' }}>
<label>
Current Range:
<input
type="range"
min="0"
max="100"
value={currentValue()}
onInput={handleRangeChange}
style={{ width: '100%' }}
/>
<span>{currentValue()}</span>
</label>
</div>
<div style={{ 'margin-bottom': '20px' }}>
<label>
Rate Limited Range (Readonly):
<input
type="range"
min="0"
max="100"
value={rateLimitedValue()}
readOnly
style={{ width: '100%' }}
/>
<span>{rateLimitedValue()}</span>
</label>
</div>
<div style={{ color: '#666', 'font-size': '0.9em' }}>
<p>Rate limited to 20 updates per 2 seconds</p>
</div>
</div>
)
}
render(
() => (
<div>
<App1 />
<hr />
<App2 />
<hr />
<App3 />
</div>
),
document.getElementById('root')!,
)
import { createSignal } from 'solid-js'
import { render } from 'solid-js/web'
import { rateLimit } from '@tanstack/solid-pacer/rate-limiter'
function App1() {
const [windowType, setWindowType] = createSignal<'fixed' | 'sliding'>('fixed')
// Use your state management library of choice
const [instantCount, setInstantCount] = createSignal(0)
const [rateLimitedCount, setRateLimitedCount] = createSignal(0)
// Create rate-limited setter function - Stable reference required!
const rateLimitedSetCount = rateLimit(setRateLimitedCount, {
limit: 5,
window: 5000,
windowType: windowType(),
onReject: (rateLimiter) =>
console.log(
'Rejected by rate limiter',
rateLimiter.getMsUntilNextWindow(),
),
})
function increment() {
// this pattern helps avoid common bugs with stale closures and state
setInstantCount((c) => {
const newInstantCount = c + 1 // common new value for both
rateLimitedSetCount(newInstantCount) // rate-limited state update
return newInstantCount // instant state update
})
}
return (
<div>
<h1>TanStack Pacer rateLimit Example 1</h1>
<div style={{ display: 'grid', gap: '0.5rem', 'margin-bottom': '1rem' }}>
<label>
<input
type="radio"
name="windowType"
value="fixed"
checked={windowType() === 'fixed'}
onChange={() => setWindowType('fixed')}
/>
Fixed Window
</label>
<label>
<input
type="radio"
name="windowType"
value="sliding"
checked={windowType() === 'sliding'}
onChange={() => setWindowType('sliding')}
/>
Sliding Window
</label>
</div>
<table>
<tbody>
<tr>
<td>Instant Count:</td>
<td>{instantCount()}</td>
</tr>
<tr>
<td>Rate Limited Count:</td>
<td>{rateLimitedCount()}</td>
</tr>
</tbody>
</table>
<div>
<button onClick={increment}>Increment</button>
</div>
</div>
)
}
function App2() {
const [windowType, setWindowType] = createSignal<'fixed' | 'sliding'>('fixed')
const [text, setText] = createSignal('')
const [rateLimitedText, setRateLimitedText] = createSignal('')
// Create rate-limited setter function - Stable reference required!
const rateLimitedSetText = rateLimit(setRateLimitedText, {
limit: 5,
window: 5000,
windowType: windowType(),
onReject: (rateLimiter) =>
console.log(
'Rejected by rate limiter',
rateLimiter.getMsUntilNextWindow(),
),
})
function handleTextChange(e: Event) {
const target = e.target as HTMLInputElement
const newValue = target.value
setText(newValue)
rateLimitedSetText(newValue)
}
return (
<div>
<h1>TanStack Pacer rateLimit Example 2</h1>
<div style={{ display: 'grid', gap: '0.5rem', 'margin-bottom': '1rem' }}>
<label>
<input
type="radio"
name="windowType2"
value="fixed"
checked={windowType() === 'fixed'}
onChange={() => setWindowType('fixed')}
/>
Fixed Window
</label>
<label>
<input
type="radio"
name="windowType2"
value="sliding"
checked={windowType() === 'sliding'}
onChange={() => setWindowType('sliding')}
/>
Sliding Window
</label>
</div>
<div>
<input
autofocus
type="search"
value={text()}
onInput={handleTextChange}
placeholder="Type text (rate limited to 3 updates per 5 seconds)..."
style={{ width: '100%' }}
/>
</div>
<table>
<tbody>
<tr>
<td>Instant Text:</td>
<td>{text()}</td>
</tr>
<tr>
<td>Rate Limited Text:</td>
<td>{rateLimitedText()}</td>
</tr>
</tbody>
</table>
</div>
)
}
function App3() {
const [windowType, setWindowType] = createSignal<'fixed' | 'sliding'>('fixed')
const [currentValue, setCurrentValue] = createSignal(50)
const [rateLimitedValue, setRateLimitedValue] = createSignal(50)
// Create rate-limited setter function - Stable reference required!
const rateLimitedSetValue = rateLimit(setRateLimitedValue, {
limit: 20,
window: 2000,
windowType: windowType(),
onReject: (rateLimiter) =>
console.log(
'Rejected by rate limiter',
rateLimiter.getMsUntilNextWindow(),
),
})
function handleRangeChange(e: Event) {
const target = e.target as HTMLInputElement
const newValue = parseInt(target.value, 10)
setCurrentValue(newValue)
rateLimitedSetValue(newValue)
}
return (
<div>
<h1>TanStack Pacer rateLimit Example 3</h1>
<div style={{ display: 'grid', gap: '0.5rem', 'margin-bottom': '1rem' }}>
<label>
<input
type="radio"
name="windowType3"
value="fixed"
checked={windowType() === 'fixed'}
onChange={() => setWindowType('fixed')}
/>
Fixed Window
</label>
<label>
<input
type="radio"
name="windowType3"
value="sliding"
checked={windowType() === 'sliding'}
onChange={() => setWindowType('sliding')}
/>
Sliding Window
</label>
</div>
<div style={{ 'margin-bottom': '20px' }}>
<label>
Current Range:
<input
type="range"
min="0"
max="100"
value={currentValue()}
onInput={handleRangeChange}
style={{ width: '100%' }}
/>
<span>{currentValue()}</span>
</label>
</div>
<div style={{ 'margin-bottom': '20px' }}>
<label>
Rate Limited Range (Readonly):
<input
type="range"
min="0"
max="100"
value={rateLimitedValue()}
readOnly
style={{ width: '100%' }}
/>
<span>{rateLimitedValue()}</span>
</label>
</div>
<div style={{ color: '#666', 'font-size': '0.9em' }}>
<p>Rate limited to 20 updates per 2 seconds</p>
</div>
</div>
)
}
render(
() => (
<div>
<App1 />
<hr />
<App2 />
<hr />
<App3 />
</div>
),
document.getElementById('root')!,
)
