Gzip 压缩

在 HTTP 中,GNUzip(Gzip) 压缩编码是一种用来优化 Web 应用程序性能的方式,并且 Hertz 也提供了 Gzip 的实现

安装

go get github.com/hertz-contrib/gzip

示例代码

package main

import (
	"context"
	"fmt"
	"net/http"
	"time"

	"github.com/cloudwego/hertz/pkg/app"
	"github.com/cloudwego/hertz/pkg/app/server"
	"github.com/hertz-contrib/gzip"
)

func main() {
	h := server.Default(server.WithHostPorts(":8080"))
	h.Use(gzip.Gzip(gzip.DefaultCompression))
	h.GET("/ping", func(ctx context.Context, c *app.RequestContext) {
		c.String(http.StatusOK, "pong "+fmt.Sprint(time.Now().Unix()))
	})
	h.Spin()
}

配置

Gzip

Gzip提供了四种压缩选项:BestCompression,BestSpeed,DefaultCompression,NoCompression 用于用户自定义压缩模式

选项描述
BestCompression提供最佳的文件压缩率
BestSpeed提供了最佳的压缩速度
DefaultCompression默认压缩率
NoCompression不进行压缩

函数签名如下:

func Gzip(level int, options ...Option) app.HandlerFunc

示例代码如下:

package main

import (
	"context"
	"fmt"
	"net/http"
	"time"

	"github.com/cloudwego/hertz/pkg/app"
	"github.com/cloudwego/hertz/pkg/app/server"
	"github.com/hertz-contrib/gzip"
)

func main() {
	h := server.Default(server.WithHostPorts(":8080"))
	// BestCompression option
	h.Use(gzip.Gzip(gzip.BestCompression))
	// BestSpeed option
	h.Use(gzip.Gzip(gzip.BestSpeed))
	// DefaultCompression option
	h.Use(gzip.Gzip(gzip.DefaultCompression))
	// NoCompression option
	h.Use(gzip.Gzip(gzip.NoCompression))
	h.GET("/api/book", func(ctx context.Context, c *app.RequestContext) {
		c.String(http.StatusOK, "pong "+fmt.Sprint(time.Now().Unix()))
	})
	h.Spin()
}

WithExcludedExtensions

gzip 提供 WithExcludeExtensions 用于帮助用户设置不需要 gzip 压缩的文件后缀,默认值为.png, .gif, .jpeg, .jpg

函数签名如下:

func WithExcludedPaths(args []string) Option

示例代码如下:

package main

import (
	"context"
	"fmt"
	"net/http"
	"time"

	"github.com/cloudwego/hertz/pkg/app"
	"github.com/cloudwego/hertz/pkg/app/server"
	"github.com/hertz-contrib/gzip"
)

func main() {
	h := server.Default(server.WithHostPorts(":8080"))
	h.Use(
		gzip.Gzip(
			gzip.DefaultCompression,
			gzip.WithExcludedExtensions([]string{".pdf", ".mp4"}),
		),
	)
	h.GET("/api/book", func(ctx context.Context, c *app.RequestContext) {
		c.String(http.StatusOK, "pong "+fmt.Sprint(time.Now().Unix()))
	})
	h.Spin()
}

WithExcludedPaths

gzip 提供了 WithExcludedPaths用于帮助用户设置其不需要进行 gzip 压缩的文件路径

函数签名如下:

func WithExcludedPaths(args []string) Option

示例代码如下:

package main

import (
	"context"
	"fmt"
	"net/http"
	"time"

	"github.com/cloudwego/hertz/pkg/app"
	"github.com/cloudwego/hertz/pkg/app/server"
	"github.com/hertz-contrib/gzip"
)

func main() {
	h := server.Default(server.WithHostPorts(":8080"))
	h.Use(
		gzip.Gzip(
			gzip.DefaultCompression,
			// This WithExcludedPaths takes as its parameter the file path
			gzip.WithExcludedPaths([]string{"/api/"}),
		),
	)
	// This is No compression
	h.GET("/api/book", func(ctx context.Context, c *app.RequestContext) {
		c.String(http.StatusOK, "pong "+fmt.Sprint(time.Now().Unix()))
	})
	// This is the compressed
	h.GET("/book", func(ctx context.Context, c *app.RequestContext) {
		c.String(http.StatusOK, "pong "+fmt.Sprint(time.Now().Unix()))
	})
	h.Spin()
}

WithExcludedPathRegexes

gzip 提供了WithExcludedPathRegexes用于帮助用户设置自定义的正则表达式来过滤掉不需要 gzip 压缩的文件

函数签名如下:

func WithExcludedPathRegexes(args []string) Option

示例代码如下:

package main

import (
	"context"
	"fmt"
	"net/http"
	"time"

	"github.com/cloudwego/hertz/pkg/app"
	"github.com/cloudwego/hertz/pkg/app/server"
	"github.com/hertz-contrib/gzip"
)

func main() {
	h := server.Default(server.WithHostPorts(":8080"))
	h.Use(
		gzip.Gzip(
			gzip.DefaultCompression,
			// This WithExcludedPathRegexes takes as an argument a regular expression that describes the path to be excluded
			gzip.WithExcludedPathRegexes([]string{"/api.*"}),
		),
	)
	// This is No compression
	h.GET("/api/book", func(ctx context.Context, c *app.RequestContext) {
		c.String(http.StatusOK, "pong "+fmt.Sprint(time.Now().Unix()))
	})
	// This is the compressed
	h.GET("/book", func(ctx context.Context, c *app.RequestContext) {
		c.String(http.StatusOK, "pong "+fmt.Sprint(time.Now().Unix()))
	})
	h.Spin()
}

更多用法示例详见 gzip


最后修改 December 2, 2022 : chore: add lark footer link (#460) (f41a884)