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This is a middleware for hertz.

Hertz middleware for cache response management with multi-backend support:

• memory
• redis

This repo is forked from gin-cache and adapted for hertz.

Usage

Start using it

Download and install it:

go get github.com/hertz-contrib/cache

Import it in your code:

import "github.com/hertz-contrib/cache"

Basic Examples

memory

package main

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

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

func main() {
    h := server.New()

    memoryStore := persist.NewMemoryStore(1 * time.Minute)

    var cacheHitCount, cacheMissCount int32

    h.Use(cache.NewCacheByRequestURI(
        memoryStore,
        2*time.Second,
        cache.WithOnHitCache(func(ctx context.Context, c *app.RequestContext) {
            atomic.AddInt32(&cacheHitCount, 1)
        }),
        cache.WithOnMissCache(func(ctx context.Context, c *app.RequestContext) {
            atomic.AddInt32(&cacheMissCount, 1)
        }),
    ))
    h.GET("/hello", func(ctx context.Context, c *app.RequestContext) {
        c.String(http.StatusOK, "hello world")
    })
    h.GET("/get_hit_count", func(ctx context.Context, c *app.RequestContext) {
        c.String(200, fmt.Sprintf("total hit count: %d", cacheHitCount))
    })
    h.GET("/get_miss_count", func(ctx context.Context, c *app.RequestContext) {
        c.String(200, fmt.Sprintf("total miss count: %d", cacheMissCount))
    })

    h.Spin()
}

redis

package main

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

    "github.com/cloudwego/hertz/pkg/app"
    "github.com/cloudwego/hertz/pkg/app/server"
    "github.com/go-redis/redis/v8"
    "github.com/hertz-contrib/cache"
    "github.com/hertz-contrib/cache/persist"
)

func main() {
    h := server.New()

    redisStore := persist.NewRedisStore(redis.NewClient(&redis.Options{
        Network: "tcp",
        Addr:    "127.0.0.1:6379",
    }))

    h.Use(cache.NewCacheByRequestURI(redisStore, 2*time.Second))
    h.GET("/hello", func(ctx context.Context, c *app.RequestContext) {
        c.String(http.StatusOK, "hello world")
    })
    h.Spin()
}

License

This project is under Apache License. See the LICENSE-APACHE file for the full license text.