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https://github.com/nanmu42/gzip
:floppy_disk: Golang gzip middleware for Gin and net/http | Golang gzip中间件,支持Gin和net/http,开箱即用同时可定制
https://github.com/nanmu42/gzip
compression content-length content-type gin gin-middleware go golang gzip http middleware
Last synced: 5 days ago
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:floppy_disk: Golang gzip middleware for Gin and net/http | Golang gzip中间件,支持Gin和net/http,开箱即用同时可定制
- Host: GitHub
- URL: https://github.com/nanmu42/gzip
- Owner: nanmu42
- License: mit
- Created: 2019-12-05T03:03:55.000Z (almost 5 years ago)
- Default Branch: v1
- Last Pushed: 2023-03-10T03:44:53.000Z (over 1 year ago)
- Last Synced: 2024-10-31T16:57:40.602Z (12 days ago)
- Topics: compression, content-length, content-type, gin, gin-middleware, go, golang, gzip, http, middleware
- Language: Go
- Homepage:
- Size: 138 KB
- Stars: 145
- Watchers: 4
- Forks: 15
- Open Issues: 1
-
Metadata Files:
- Readme: README.Chinese.md
- Funding: .github/FUNDING.yml
- License: LICENSE
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- awesome-seeds - Gzip Middleware for Go
README
[English](https://github.com/nanmu42/gzip/blob/master/README.md) | **中文**
# gzip
[![GoDoc](https://godoc.org/github.com/nanmu42/gzip?status.svg)](https://godoc.org/github.com/nanmu42/gzip)
[![Build status](https://github.com/nanmu42/gzip/workflows/build/badge.svg)](https://github.com/nanmu42/gzip/actions)
[![codecov](https://codecov.io/gh/nanmu42/gzip/branch/master/graph/badge.svg)](https://codecov.io/gh/nanmu42/gzip)
[![Lint status](https://github.com/nanmu42/gzip/workflows/golangci-lint/badge.svg)](https://github.com/nanmu42/gzip/actions)
[![Go Report Card](https://goreportcard.com/badge/github.com/nanmu42/gzip)](https://goreportcard.com/report/github.com/nanmu42/gzip)一个开箱即用,可定制,适用于[Gin](https://github.com/gin-gonic/gin)和[net/http](https://golang.org/pkg/net/http/)的gzip中间件。
![Golang Gzip Middleware](https://repository-images.githubusercontent.com/226004454/598f2e80-87a9-11ea-8c80-ecfc0e85fef5)
# 使用示例
默认设置`DefaultHandler()`可以满足大部分场景。
## Gin
```go
import github.com/nanmu42/gzipfunc main() {
g := gin.Default()
// 使用默认设定
g.Use(gzip.DefaultHandler().Gin)g.GET("/", func(c *gin.Context) {
c.JSON(http.StatusOK, map[string]interface{}{
"code": 0,
"msg": "hello",
"data": fmt.Sprintf("l%sng!", strings.Repeat("o", 1000)),
})
})log.Println(g.Run(fmt.Sprintf(":%d", 3000)))
}
```## net/http
```go
import github.com/nanmu42/gzipfunc main() {
mux := http.NewServeMux()
mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
writeString(w, fmt.Sprintf("This content is compressed: l%sng!", strings.Repeat("o", 1000)))
})// 使用默认设定
log.Println(http.ListenAndServe(fmt.Sprintf(":%d", 3001), gzip.DefaultHandler().WrapHandler(mux)))
}func writeString(w http.ResponseWriter, payload string) {
w.Header().Set("Content-Type", "text/plain; charset=utf8")
_, _ = io.WriteString(w, payload+"\n")
}
```## 定制`Handler`
使用`NewHandler()`可以定制参数以满足你的特殊需要:
```go
import github.com/nanmu42/gziphandler := gzip.NewHandler(gzip.Config{
// gzip压缩等级
CompressionLevel: 6,
// 触发gzip的最小body体积,单位:byte
MinContentLength: 1024,
// 请求过滤器基于请求来判断是否对这条请求的返回启用gzip,
// 过滤器按其定义顺序执行,下同。
RequestFilter: []RequestFilter{
NewCommonRequestFilter(),
DefaultExtensionFilter(),
},
// 返回header过滤器基于返回的header判断是否对这条请求的返回启用gzip
ResponseHeaderFilter: []ResponseHeaderFilter{
NewSkipCompressedFilter(),
DefaultContentTypeFilter(),
},
})
````RequestFilter` 和 `ResponseHeaderFilter` 是 interface.
你可以实现你自己的过滤器。# 效率
* 当返回体积不大时,Handler会智能地跳过压缩,这个过程带来的代价可以忽略不记;
* 当返回体积足够大时,Handler会进行gzip压缩,这个过程有着合理的代价。```
$ go test -benchmem -bench .
goos: linux
goarch: amd64
pkg: github.com/nanmu42/gzip
BenchmarkSoleGin_SmallPayload-4 4104684 276 ns/op 64 B/op 2 allocs/op
BenchmarkGinWithDefaultHandler_SmallPayload-4 1683307 707 ns/op 96 B/op 3 allocs/op
BenchmarkSoleGin_BigPayload-4 4198786 274 ns/op 64 B/op 2 allocs/op
BenchmarkGinWithDefaultHandler_BigPayload-4 44780 27636 ns/op 190 B/op 5 allocs/op
PASS
ok github.com/nanmu42/gzip 6.373s
```注:由于[一个笨拙的人为错误](https://github.com/nanmu42/gzip/pull/3#issuecomment-735352715),`v1.0.0`以及更早版本的评测指标是错误的,不具有参考意义。
# 局限性
* 你应该总是在返回中提供`Content-Type`。虽然Handler会在`Content-Type`缺失时使用`http.DetectContentType()`进行猜测,但是效果并没有那么好;
* 返回的`Content-Length` 缺失时,Handler可能会缓冲返回的报文数据以决定报文是否大到值得进行压缩,如果`MinContentLength`设置得太大,这个过程可能会带来内存压力。Handler针对这个情况做了一些优化,例如查看`http.ResponseWriter.Write(data []byte)`在首次调用时的 `len(data)`,以及资源复用。# 项目状态:稳定
API已经稳定,`1.x`版本中的更新会向前兼容。
# 致谢
在本项目的开发中,作者参考了下列项目和资料:
* https://github.com/caddyserver/caddy/tree/master/caddyhttp/gzip (Apache License 2.0)
* https://github.com/gin-contrib/gzip (MIT License)
* https://blog.cloudflare.com/results-experimenting-brotli/
* https://support.cloudflare.com/hc/en-us/articles/200168396-What-will-Cloudflare-compress-本项目使用[klauspost的compress库](https://github.com/klauspost/compress)中的gzip压缩实现。
Logo在[Gopherize.me](https://gopherize.me/)生成。
# License
```
MIT License
Copyright (c) 2019 LI ZhennanCaddy is licensed under the Apache License
Copyright 2015 Light Code Labs, LLC
```