API rate limit is actually necessary for security purposes protecting the API from external attacks and improving API performance.
If you want to change the existing rate limit of RingCentral API, you can check the rate limit plan and discuss with backend support team to customize it for you.
There are different ways to tackle rate limit of API. One of the way is to implement "Delay" mechanism that hand the API call and wait for given interval of time before making next call.
You can also use the response headers ([‘X-Rate-Limit-Limit’] ) to confirm the current rate limit and monitor the number of requests remaining in the current API call.
Other ways are to reduce the number of API call. Other best practice is use to catch the response of API call with frequently used data.
