ratelimit implements Token-Bucket algorithm to help you limit transfer rate. It is rewrote from and inspired by juju/ratelimit.
resp, err := http.Get("http://example.com/")
if err != nil {
// error process
}
defer resp.Body.Close()
bucket := ratelimit.NewFromRate(
100*1024, // limit transfer rate to 10kb/s
100*1024, // bucket capacity, tune this if needed.
0, // allocate this much tokens a time, 0 means capacity/2
)
r := ratelimit.NewReader(resp.Body, bucket)
io.Copy(dst, r)See example folder for more.
Bucket is thread-safe. You can share same Bucket betweens readers/writers to limit the total transfer rate.
LGPL v3 or later.