Ask HN: How to handle API rate limiting in Integrations

I am building up integration for particular client. The quota i have for rate limit is somewhere around 10 req/s,obviously,we are exceeding that.

So how do you handle such scenarios where you might have to wait till API X-Ratelimit-Reset again after some time and avoid 429 too many requests.

Any such patterns or libraries for handling rate limited api in application.