Add or update Polling in Glossary #77
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WalkthroughA new glossary entry titled "API Polling: Comprehensive Guide" has been added to the documentation. This entry explains the concept of API polling, its mechanics, use cases, alternatives, best practices, code examples, historical context, FAQs, and future directions, all structured with appropriate metadata for glossary integration. Changes
Estimated code review effort🎯 1 (Trivial) | ⏱️ ~3 minutes Suggested reviewers
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Actionable comments posted: 1
🧹 Nitpick comments (3)
apps/www/content/glossary/polling.mdx (3)
2-6: Populatecategoriesand tone-down the marketing-style descriptionThe description reads like marketing copy and the
categoriesarray is empty, which prevents proper indexing in the docs site.-description: Unlock API Polling power. Learn essentials, key takeaways from real-world examples. Understand API Polling vs Webhooks. +description: Understand how API polling works, when to use it, and how it compares to alternatives such as webhooks and WebSockets. -categories: [] +categories: + - APIs + - Architecture + - Glossary
28-33: Replace unrelated “recommendedReading” links with API-focused resourcesThe current links point to political-polling sites and an IETF draft unrelated to API polling.
- - url: https://en.wikipedia.org/wiki/Opinion_poll - title: Opinion Poll - Wikipedia - - url: https://datatracker.ietf.org/doc/polls-123-masque-202507221130/ - title: "Polls IETF123: masque - IETF Datatracker" - - url: https://www.realclearpolling.com/ - title: RealClearPolling - Real-Time Polling Data + - url: https://developer.mozilla.org/en-US/docs/Web/API/fetch#checking_for_updates_polling + title: MDN – Polling with Fetch + - url: https://realtimeapi.io/articles/polling-long-polling-and-websockets + title: Polling, Long-Polling, and WebSockets – Real-Time API Reference + - url: https://cloud.google.com/apis/design/polling + title: Google Cloud API Design – Polling guidelines
99-106: Mention bothIf-Modified-SinceandIf-None-Matchfor conditional requestsOnly
If-None-Matchis referenced; addingIf-Modified-Sincemakes the guidance more complete.
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apps/www/content/glossary/polling.mdx
| Here’s a simple **API polling example** in TypeScript using ESM syntax: | ||
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| ```typescript | ||
| import axios from 'axios'; | ||
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| const poll = async (url: string, interval: number) => { | ||
| try { | ||
| const response = await axios.get(url); | ||
| console.log('Data:', response.data); | ||
| } catch (error) { | ||
| console.error('Error:', error); | ||
| } finally { | ||
| setTimeout(() => poll(url, interval), interval); | ||
| } | ||
| }; | ||
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| poll('https://api.example.com/data', 5000); // Polls every 5 seconds | ||
| ``` |
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🛠️ Refactor suggestion
Add cancellation & prevent unbounded timers in the TypeScript example
The recursive setTimeout loop never stops, which can leak timers. Expose an AbortSignal so callers can cancel polling.
-const poll = async (url: string, interval: number) => {
+const poll = async (url: string, interval: number, abortSignal?: AbortSignal) => {
try {
const response = await axios.get(url);
console.log('Data:', response.data);
} catch (error) {
console.error('Error:', error);
} finally {
- setTimeout(() => poll(url, interval), interval);
+ if (!abortSignal?.aborted) {
+ setTimeout(() => poll(url, interval, abortSignal), interval);
+ }
}
};
-poll('https://api.example.com/data', 5000); // Polls every 5 seconds
+const controller = new AbortController();
+poll('https://api.example.com/data', 5000, controller.signal); // Polls every 5 s
+// Call controller.abort() to stop polling📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| Here’s a simple **API polling example** in TypeScript using ESM syntax: | |
| ```typescript | |
| import axios from 'axios'; | |
| const poll = async (url: string, interval: number) => { | |
| try { | |
| const response = await axios.get(url); | |
| console.log('Data:', response.data); | |
| } catch (error) { | |
| console.error('Error:', error); | |
| } finally { | |
| setTimeout(() => poll(url, interval), interval); | |
| } | |
| }; | |
| poll('https://api.example.com/data', 5000); // Polls every 5 seconds | |
| ``` |
🤖 Prompt for AI Agents
In apps/www/content/glossary/polling.mdx around lines 60 to 77, the TypeScript
polling example uses a recursive setTimeout loop that never stops, causing
potential timer leaks. Modify the poll function to accept an AbortSignal
parameter and check its aborted state before scheduling the next poll. Use the
signal's abort event to cancel any pending timers, allowing callers to stop
polling and prevent unbounded timers.
This PR adds or updates the Polling.mdx file in the API documentation.
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