mirror of
https://github.com/Luzifer/staticmap.git
synced 2024-12-21 05:11:18 +00:00
71 lines
2.5 KiB
Markdown
71 lines
2.5 KiB
Markdown
[](http://godoc.org/github.com/didip/tollbooth)
|
|
[](https://raw.githubusercontent.com/didip/tollbooth/master/LICENSE)
|
|
|
|
## Tollbooth
|
|
|
|
This is a generic middleware to rate-limit HTTP requests.
|
|
|
|
**NOTE:** This library is considered finished, any new activities are probably centered around `thirdparty` modules.
|
|
|
|
|
|
## Five Minutes Tutorial
|
|
```go
|
|
package main
|
|
|
|
import (
|
|
"github.com/didip/tollbooth"
|
|
"net/http"
|
|
"time"
|
|
)
|
|
|
|
func HelloHandler(w http.ResponseWriter, req *http.Request) {
|
|
w.Write([]byte("Hello, World!"))
|
|
}
|
|
|
|
func main() {
|
|
// Create a request limiter per handler.
|
|
http.Handle("/", tollbooth.LimitFuncHandler(tollbooth.NewLimiter(1, time.Second), HelloHandler))
|
|
http.ListenAndServe(":12345", nil)
|
|
}
|
|
```
|
|
|
|
## Features
|
|
|
|
1. Rate-limit by request's remote IP, path, methods, custom headers, & basic auth usernames.
|
|
```go
|
|
limiter := tollbooth.NewLimiter(1, time.Second)
|
|
|
|
// or create a limiter with expirable token buckets
|
|
// This setting means:
|
|
// create a 1 request/second limiter and
|
|
// every token bucket in it will expire 1 hour after it was initially set.
|
|
limiter = tollbooth.NewLimiterExpiringBuckets(1, time.Second, time.Hour, 0)
|
|
|
|
// Configure list of places to look for IP address.
|
|
// By default it's: "RemoteAddr", "X-Forwarded-For", "X-Real-IP"
|
|
// If your application is behind a proxy, set "X-Forwarded-For" first.
|
|
limiter.IPLookups = []string{"RemoteAddr", "X-Forwarded-For", "X-Real-IP"}
|
|
|
|
// Limit only GET and POST requests.
|
|
limiter.Methods = []string{"GET", "POST"}
|
|
|
|
// Limit request headers containing certain values.
|
|
// Typically, you prefetched these values from the database.
|
|
limiter.Headers = make(map[string][]string)
|
|
limiter.Headers["X-Access-Token"] = []string{"abc123", "xyz098"}
|
|
|
|
// Limit based on basic auth usernames.
|
|
// Typically, you prefetched these values from the database.
|
|
limiter.BasicAuthUsers = []string{"bob", "joe", "didip"}
|
|
```
|
|
|
|
2. Each request handler can be rate-limited individually.
|
|
|
|
3. Compose your own middleware by using `LimitByKeys()`.
|
|
|
|
4. Tollbooth does not require external storage since it uses an algorithm called [Token Bucket](http://en.wikipedia.org/wiki/Token_bucket) [(Go library: golang.org/x/time/rate)](//godoc.org/golang.org/x/time/rate).
|
|
|
|
|
|
# Other Web Frameworks
|
|
|
|
Support for other web frameworks are defined under `/thirdparty` directory.
|