optimize code

README.md

@@ -199,6 +199,8 @@ Detailed step-by-step, configuration, deployment instructions for developing pro
 #### Distributed transaction examples
 
 - [Simple distributed order system](https://github.com/zhufuyi/sponge_examples/tree/main/9_order-grpc-distributed-transaction)
+- [Flash sale](https://github.com/zhufuyi/sponge_examples/tree/main/_12_sponge-dtm-flashSale)
+- [E-Commerce system](https://github.com/zhufuyi/sponge_examples/tree/main/_14_eshop)
 
 <br>
 <br>

assets/readme-cn.md

@@ -186,6 +186,8 @@ sponge run
 #### 分布式事务示例
 
 - [简单的分布式订单系统](https://github.com/zhufuyi/sponge_examples/tree/main/9_order-grpc-distributed-transaction)
+- [秒杀抢购活动](https://github.com/zhufuyi/sponge_examples/tree/main/_12_sponge-dtm-flashSale)
+- [电商系统](https://github.com/zhufuyi/sponge_examples/tree/main/_14_eshop)
 
 <br>
 <br>

cmd/protoc-gen-go-gin/internal/generate/handler/template.go

@@ -266,7 +266,8 @@ func {{.LowerName}}Router(
 	iService {{.ProtoPkgName}}.{{.Name}}Logicer) {
 	ctxFn := func(c *gin.Context) context.Context {
 		md := metadata.New(map[string]string{
-			middleware.ContextRequestIDKey: middleware.GCtxRequestID(c),
+			middleware.ContextRequestIDKey: middleware.GCtxRequestID(c), // request_id
+			//middleware.HeaderAuthorizationKey: c.GetHeader(middleware.HeaderAuthorizationKey),  // authorization
 		})
 		return metadata.NewIncomingContext(c.Request.Context(), md)
 	}

cmd/sponge/commands/generate/template.go

@@ -573,12 +573,11 @@ func InitMysql() {
 		opts = append(opts, ggorm.WithEnableTrace())
 	}
 
-	// setting mysql slave and master dsn addresses,
-	// if there is no read/write separation, you can comment out the following piece of code
-	opts = append(opts, ggorm.WithRWSeparation(
-		config.Get().Database.Mysql.SlavesDsn,
-		config.Get().Database.Mysql.MastersDsn...,
-	))
+	// setting mysql slave and master dsn addresses
+	//opts = append(opts, ggorm.WithRWSeparation(
+	//	config.Get().Database.Mysql.SlavesDsn,
+	//	config.Get().Database.Mysql.MastersDsn...,
+	//))
 
 	// add custom gorm plugin
 	//opts = append(opts, ggorm.WithGormPlugin(yourPlugin))

internal/model/init.go

@@ -145,12 +145,11 @@ func InitMysql() {
 		opts = append(opts, ggorm.WithEnableTrace())
 	}
 
-	// setting mysql slave and master dsn addresses,
-	// if there is no read/write separation, you can comment out the following piece of code
-	opts = append(opts, ggorm.WithRWSeparation(
-		config.Get().Database.Mysql.SlavesDsn,
-		config.Get().Database.Mysql.MastersDsn...,
-	))
+	// setting mysql slave and master dsn addresses
+	//opts = append(opts, ggorm.WithRWSeparation(
+	//	config.Get().Database.Mysql.SlavesDsn,
+	//	config.Get().Database.Mysql.MastersDsn...,
+	//))
 
 	// add custom gorm plugin
 	//opts = append(opts, ggorm.WithGormPlugin(yourPlugin))

pkg/krand/krand.go

@@ -106,12 +106,26 @@ func NewStringID() string {
 	return strconv.FormatInt(NewID(), 16)
 }
 
-var datetimeUsLayout = "20060102150405.000000"
-
 // NewSeriesID Generate a datetime+random string ID,
 // datetime is microsecond precision, 20  bytes, random is 6 bytes, total 26 bytes.
 // example: 20060102150405000000123456
 func NewSeriesID() string {
-	dt := time.Now().Format(datetimeUsLayout)
-	return dt[:14] + dt[15:] + String(R_NUM)
+	// Declare a buffer, only 26 bytes are needed
+	var buf [27]byte
+	t := time.Now()
+
+	// Format datetime with microsecond precision, and store in the buffer
+	copy(buf[:], t.Format("20060102150405.000000"))
+
+	// Generate a 6-digit random number and append it to the buffer
+	random := rand.Intn(1000000)
+	buf[21] = '0' + byte(random/100000%10)
+	buf[22] = '0' + byte(random/10000%10)
+	buf[23] = '0' + byte(random/1000%10)
+	buf[24] = '0' + byte(random/100%10)
+	buf[25] = '0' + byte(random/10%10)
+	buf[26] = '0' + byte(random%10)
+
+	// Return the final string without the dot
+	return string(buf[:14]) + string(buf[15:])
 }