When integrating with external APIs like SendGrid, Stripe, or OpenAI, exceeding rate limits causes 429 errors, failed workflows, and potential account suspension. Temporal's validated pattern addresses this by assigning a dedicated Task Queue per rate-limited API and configuring three key settings: a global rate limit across all workers (`max_task_queue_activities_per_second`), an optional per-worker rate limit (`max_activities_per_second`), and a concurrency cap (`max_concurrent_activities`). This keeps Activities within provider quotas without manual throttling logic.
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