The UBLION API enforces limits on the API calls a customer can make based on their bundle settings. The limits apply to the use of all UBLION APIs. Default API control settings are provided by the service.
When an API call is received, UBLION first checks the concurrency limit; and if the concurrency limit has been exceeded the API call is blocked and an error is returned. In the case where the concurrency limit has not been exceeded, the service checks the rate limit; and if the rate limit has been exceeded the API call is blocked and an error is returned.
The API concurrency is calculated each time an API call is received and checked against the concurrency limit for the subscription.
The rate count and period are calculated dynamically each time an API call is received. The rate period represents a rolling window when API calls are counted. A user may distribute the quota of API calls arbitrarily within the time window. Using a subscription for Standard API Service this quota is 3 API calls per 15 minutes.