API Calls: Fetch, Parse, and Compute

Problem Given a paginated HTTP API, fetch all pages of records, parse them, and compute an aggregate over the full dataset (e.g. total or average of a numeric field). The API returns one page per request and signals when there are no more pages.

Input / Output

• Input: an API endpoint that accepts a page number/cursor and returns a page of records.
• Output: the computed aggregate across every record.

Constraints

• The number of pages is not known up front; loop until an empty (or last) page.
• Handle transient network errors with retries.
• Records may span many pages, so avoid holding everything in memory if a streaming aggregate suffices.

Example

• GET /data?page=1..N until a page comes back empty; accumulate a running sum and count -> return sum/count as the average.