#error handling

7 error handling interview questions, asked at Apple, Amazon, Nvidia and 2 more companies. Last asked Sep 2026.

First successful result from parallel calls under a global timeoutCodingA backend API is slow and sometimes fails. To answer quickly, call several of these functions in parallel and return the first result that succeeds. Write a function that takes…
Last asked Sep 2026
Parse a raw CSV string and handle corrupted rowsCodingAnother team receives data as a raw CSV payload in one string. Write code that turns it into a data structure other teams can consume. Some rows are corrupted (wrong number of…
Last asked Sep 2026
Call a flaky HTTP API with Python requests and handle every errorCodingUsing Python's requests, write a client for a few endpoints of a fake API (you have its docs; the code does not need to run against a real server). Handle the failure cases…
Last asked Sep 2026
Breadth-first web crawler with retriesCodingIn your own IDE, write a crawler that walks a given website breadth-first from a start URL, normalizing URLs and retrying requests that fail. API docs are allowed; AI tools are…
Last asked Mar 2026
React fundamentals and error handlingCodingExplain core React concepts: components and props, state and re-renders, hooks and their rules, effects and cleanup, keys in lists. Then explain how you handle errors in a React…
Last asked Feb 2026
Simple VM manager with add, list, modify and deleteCodingWrite a simple manager for virtual machines: add a VM with its attributes, list VMs, modify a VM's attributes and delete a VM. Handle errors such as adding a duplicate id or…
Last asked Nov 2025
Write a robust REST API methodCodingWrite one REST API method from end to end: validate the input, handle the request, return proper status codes and errors, and cover retries, timeouts and logging.
Last asked Jul 2025