Our throttling strategy is very liberal and depends on the plan you have chosen.
Under most circumstances, you shouldn't have to worry about throttling unless you deliberately concentrate all your requests over a short timespan.
If we do throttle your request, you will get a 429 HTTP error code along with an error message telling you that you were throttled. You should then retry with an exponential back-off strategy, meaning that you retry after 4 seconds, then 8 seconds, then 16 seconds etc.
For more details on the throttling limits for your plan and to request custom limits, please get in touch.