init

database/gorm-cache/example/main.go.demo

@@ -0,0 +1,92 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"github.com/go-redis/redis/v8"
+	"github.com/liyuan1125/gorm-cache"
+	redis2 "github.com/liyuan1125/gorm-cache/store/redis"
+	"gorm.io/driver/mysql"
+	"gorm.io/gorm"
+	"os"
+	"time"
+)
+
+var (
+	db *gorm.DB
+
+	redisClient *redis.Client
+
+	cachePlugin *cache.Cache
+)
+
+func newDb() {
+	dsn := "root:123456@tcp(127.0.0.1:3306)/gorm?charset=utf8&parseTime=True&loc=Local"
+	var err error
+
+	db, err = gorm.Open(mysql.Open(dsn), &gorm.Config{})
+	if err != nil {
+		fmt.Println(err.Error())
+		return
+	}
+
+	redisClient = redis.NewClient(&redis.Options{Addr: ":6379"})
+
+	cacheConfig := &cache.Config{
+		Store:      redis2.NewWithDb(redisClient), // OR redis2.New(&redis.Options{Addr:"6379"})
+		Serializer: &cache.DefaultJSONSerializer{},
+	}
+
+	cachePlugin = cache.New(cacheConfig)
+
+	if err = db.Use(cachePlugin); err != nil {
+		fmt.Println(err.Error())
+		os.Exit(1)
+	}
+}
+
+func basic() {
+	var username string
+	ctx := context.Background()
+	ctx = cache.NewExpiration(ctx, time.Hour)
+
+	db.Table("users").WithContext(ctx).Where("id = 1").Limit(1).Pluck("username", &username)
+	fmt.Println(username)
+	// output gorm
+}
+
+func customKey() {
+	var nickname string
+	ctx := context.Background()
+	ctx = cache.NewExpiration(ctx, time.Hour)
+	ctx = cache.NewKey(ctx, "nickname")
+
+	db.Table("users").WithContext(ctx).Where("id = 1").Limit(1).Pluck("nickname", &nickname)
+
+	fmt.Println(nickname)
+	// output gormwithmysql
+}
+
+func useTag() {
+	var nickname string
+	ctx := context.Background()
+	ctx = cache.NewExpiration(ctx, time.Hour)
+	ctx = cache.NewTag(ctx, "users")
+
+	db.Table("users").WithContext(ctx).Where("id = 1").Limit(1).Pluck("nickname", &nickname)
+
+	fmt.Println(nickname)
+	// output gormwithmysql
+}
+
+func main() {
+	newDb()
+	basic()
+	customKey()
+	useTag()
+
+	ctx := context.Background()
+	fmt.Println(redisClient.Keys(ctx, "*").Val())
+
+	fmt.Println(cachePlugin.RemoveFromTag(ctx, "users"))
+}