Ratelimit use Leaky Bucket

This project is a sample for ratelimit using Leaky Bucket. Although the golang official pkg provide a implement with Token Bucket time/rate,

you can also make your owns via gin's functional Use() to integrate extra middlewares.

Effect

// You can assign the ratelimit of the server
// rps: requests per second
go run rate.go -rps=100

• Let's hava a simple test by ab with 3000 mock requests, not surprisingly，it will takes 10ms each request.

ab -n 3000 -c 1 "http://localhost:8080/rate"

• Gin Log Output

[GIN] 10ms
[GIN] 2020/07/14 - 15:07:49 | 200 |    8.307734ms |       127.0.0.1 | GET      /rate
[GIN] 10ms
[GIN] 2020/07/14 - 15:07:49 | 200 |   10.512913ms |       127.0.0.1 | GET      /rate
[GIN] 10ms
[GIN] 2020/07/14 - 15:07:49 | 200 |     8.54681ms |       127.0.0.1 | GET      /rate
[GIN] 10ms
[GIN] 2020/07/14 - 15:07:49 | 200 |    8.356436ms |       127.0.0.1 | GET      /rate
[GIN] 10ms
[GIN] 2020/07/14 - 15:07:49 | 200 |    9.677276ms |       127.0.0.1 | GET      /rate
[GIN] 10ms
[GIN] 2020/07/14 - 15:07:49 | 200 |    7.536156ms |       127.0.0.1 | GET      /rate
[GIN] 10ms
[GIN] 2020/07/14 - 15:07:49 | 200 |    11.57084ms |       127.0.0.1 | GET      /rate
[GIN] 10ms
[GIN] 2020/07/14 - 15:07:49 | 200 |       7.802ms |       127.0.0.1 | GET      /rate
[GIN] 10ms
[GIN] 2020/07/14 - 15:07:49 | 200 |    9.602394ms |       127.0.0.1 | GET      /rate

• AB Test Reporter

Concurrency Level:      1
Time taken for tests:   30.00 seconds
Complete requests:      3000
Requests per second:    100.00 [#/sec] (mean)
Time per request:       10.001 [ms] (mean)
Time per request:       10.001 [ms] (mean, across all concurrent requests)