How to consume rate-limited APIs safely: read RateLimit headers, handle 429s with backoff, and monitor throttled dependencies before they break your app.
What 400, 401, 403, 404 and 429 really mean, what causes each, which 4xx spikes should page you at 3am, and how to monitor them before Google notices.
Monitor API rate limits and 429 throttling errors. Track quota usage, retry-after headers, and avoid surprise outages from third-party caps.
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