If you continue to be rate-limited, try these work-arounds:
- Make sure you have the API Key in the URL. Requests without API Key will be subject to strict rate limiting or even complete rejection.
- Limit the number of requests when launching the Dapp.
- Don't use polling for Trongrid very often, the TRON network produces a block around every 3s, and thus it usually doesn’t make sense to request new data at a faster speed.