Throttler: Is there a significant difference when requesting services from the throttler using the HTTP and CheckByType function?

[newborn22]

we can use the function CheckByType to request throtter:

// CheckByType runs a check by requested check type
func (throttler *Throttler) CheckByType(ctx context.Context, appName string, remoteAddr string, flags *CheckFlags, checkType ThrottleCheckType) (checkResult *CheckResult) 

And we can also use HTTP request:

curl -s 'http://vttablet_ip:vttablet_port/API_endpoints'
such as:
curl -s 'http://127.0.0.1:15100/throttler/check-self?app=vitess'

Will throttler have different processing logic for these two types of requests?

[newborn22]

No.
They will finally call the same method CheckByType of the throttler.