Gzip Compress

In HTTP, GNUzip(Gzip) compression coding is a way to optimize the performance of Web applications, and Hertz also provides an implementation of Gzip.

Install

go get github.com/hertz-contrib/gzip

Example

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()
}

Config

Gzip

Gzip provides four compression options: BestCompression, BestSpeed, DefaultCompression, NoCompression for user-defined compression modes

OptionsDescription
BestCompressionProvides the best file compression ratio
BestSpeedProvides the best compression speed
DefaultCompressionDefault compression rate
NoCompressionNo compression

Function Signature:

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

Sample Code:

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 provides WithExcludeExtensions to help users set file extensions that do not require gzip compression, the default values are .png, .gif, .jpeg, .jpg

Function Signature:

func WithExcludedPaths(args []string) Option

Sample Code:

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 provides WithExcludedPaths to help users set the paths of files they do not want to compress with gzip

Function Signature:

func WithExcludedPaths(args []string) Option

Sample Code:

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 provides WithExcludedPathRegexes to help users set custom regular expressions to filter out files that do not need to be compressed by gzip

Function Signature

func WithExcludedPathRegexes(args []string) Option

Sample Code:

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()
}

Refer to the gzip for more usage examples