Field notes on AI-era growth, deliverability, voice, and messaging for developers and teams building on Orbit by Devotel.
Rate limiting and throttling are two halves of the same protection mechanism in CPaaS APIs. This explainer defines both terms and shows how to handle 429 responses safely.
Verify-only providers send and check a code and leave the blocking to you. The SMS-pumping mitigation question is which pattern — plain verify, verify plus rate limiting, or fraud-aware verify — actually refuses a pumped send before it bills, and what each one costs.
Definitions of rate limiting and throttling for API builders: what each mechanism controls, how 429 responses and Retry-After headers work, and how to design retries that keep messaging deliverable.
Rate limiting caps request volume with quota rejections; throttling shapes traffic by delaying it. This explainer separates the two and gives a practical checklist for building around both in CPaaS integrations.
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