Скачать или смотреть React Interview Coding Challenges – Avoiding Overlapping Requests with AbortController

In this episode of the React Interview Coding Challenges series, we tackle a subtle but crucial concurrency problem that often crops up in a simple search scenario: *overlapping API requests**. When users type rapidly or servers respond unpredictably, requests can arrive out of order, causing stale or incorrect data to appear in our UI. By introducing the **AbortController* API, we can cancel in-flight requests, ensuring the latest query always wins and keeping our application state consistent.

We’ll break down a naive approach—where multiple requests are allowed to resolve independently—demonstrate the issue with a mocked backend using MSW, then add AbortController to cleanly abort outdated requests. This episode will give you a deeper understanding of how to handle race conditions and deliver a smoother, more reliable user experience in React.

Key Skills Covered:

Identifying and handling *race conditions* in frontend applications
Integrating *AbortController* to cancel ongoing requests
Real-world scenarios and performance considerations (e.g., load balancer delays)
Managing state updates cleanly with React hooks

By the end of this video, you’ll know how to implement *AbortController* within a custom React hook for real-time search or any other feature susceptible to overlapping requests. This technique ensures your app remains stable, up-to-date, and user-friendly—even when dealing with unpredictable servers or rapid-fire typing.

If you enjoyed this, don’t forget to like, subscribe, and share! 🚀 Stay tuned for the next episode, where we’ll tackle more advanced React and frontend interview topics.

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Additional Resources:

*React Anti-Patterns on Amazon:* https://www.amazon.com/dp/1805123971
*Advanced Data Fetching Patterns in React.* https://leanpub.com/maintainable-react
*React Clean Code Book on Leanpub:* https://leanpub.com/react-data-fetchi...
*Mastering Maintainable React Course on Udemy:* https://udemy.com/course/mastering-ma...

Find the code and newsletter issue here:

*GitHub Repository:* https://github.com/abruzzi/intersecti...
*Newsletter Issue:* https://juntao.substack.com/