is it concurrency safe?

[AsadYao]

My limit is 60. When I have 6 concurrent requests, the 60th request is not restricted, only when there are more than 60 requests. This issue was not present in the v6 version, but was present in the v9 and v10 versions

[maranmaran]

From readme

fmt.Println("allowed", res.Allowed, "remaining", res.Remaining)
// Output: allowed 1 remaining 9

You declared limit 60 and done 60 requests. That's correct and valid, no?