Async & Promiseshard
How can you optimize data fetching in asynchronous JavaScript using fetch API?
Discuss strategies to improve the efficiency of data fetching with fetch API, considering both performance and user experience.
Answer
To optimize data fetching using the fetch API:
- Use Promises: Leverage Promise methods for cleaner, more readable async code.
- AbortController: Implement it to cancel ongoing requests when they are no longer needed, improving responsiveness.
- Caching: Utilize local storage or service workers for caching previous responses, reducing server load and improving duplicate request time.
- Batching Requests: Combine multiple API calls into one, if possible, to minimize network latency.
- Loading Indicators: Provide user feedback while data is being fetched to enhance user experience.
Source: Custom