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Rate Limiting

To ensure that our API remains stable and performant, the DTM API is rate-limited.
While most implementations are likely never to hit a rate limit, developers are expected to use techniques such as caching results, limiting requests, and implementing exponential backoffs to limit load on the API.
When a rate limit is triggered, all subsequent requests will receive a 429 HTTP response (too many requests) until the end of the rate-limiting period as defined in the response.