API Integration Reliability | Dataford Interview Questions

Tell me about how you would implement a robust API integration that handles rate limiting, retries, and error logging for a distributed system.

Implement process_api_requests using deterministic simulated responses. Enforce a shared fixed-window limit, retry 429 and transient 5xx responses, and record structured logs for failed attempts.

Input includes request IDs, response sequences, retry configuration, and rate-limit configuration. Return final request results and logs in the specified formats.

Constraints

1 <= len(requests) <= 10^4
Each request contains at least one response
0 <= max_retries <= 10
1 <= capacity <= 10^6
1 <= window <= 10^9
Response statuses are valid HTTP status codes
A response sequence contains enough entries for all permitted attempts

Function Signature

def process_api_requests(requests, max_retries, capacity, window):

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Problem