optimization: config async update branch goroutine num

conf.sample.yml

@@ -48,6 +48,7 @@
 # TimeoutToFail: 35 # timeout for XA, TCC to fail. saga's timeout default to infinite, which can be overwritten in saga options
 # RetryInterval: 10 # the subtrans branch will be retried after this interval
 
+# UpdateBranchAsyncGoroutineNum: 1 # num of async goroutine to update branch status
 # LogLevel: 'info' # default: info. can be debug|info|warn|error
 # HttpPort: 36789
 # GrpcPort: 36790

dtmsvr/config/config.go

@@ -62,15 +62,16 @@ func (s *Store) GetDBConf() dtmcli.DBConf {
 }
 
 type configType struct {
-	Store             Store        `yaml:"Store"`
-	TransCronInterval int64        `yaml:"TransCronInterval" default:"3"`
-	TimeoutToFail     int64        `yaml:"TimeoutToFail" default:"35"`
-	RetryInterval     int64        `yaml:"RetryInterval" default:"10"`
-	HTTPPort          int64        `yaml:"HttpPort" default:"36789"`
-	GrpcPort          int64        `yaml:"GrpcPort" default:"36790"`
-	MicroService      MicroService `yaml:"MicroService"`
-	UpdateBranchSync  int64        `yaml:"UpdateBranchSync"`
-	LogLevel          string       `yaml:"LogLevel" default:"info"`
+	Store                         Store        `yaml:"Store"`
+	TransCronInterval             int64        `yaml:"TransCronInterval" default:"3"`
+	TimeoutToFail                 int64        `yaml:"TimeoutToFail" default:"35"`
+	RetryInterval                 int64        `yaml:"RetryInterval" default:"10"`
+	HTTPPort                      int64        `yaml:"HttpPort" default:"36789"`
+	GrpcPort                      int64        `yaml:"GrpcPort" default:"36790"`
+	MicroService                  MicroService `yaml:"MicroService"`
+	UpdateBranchSync              int64        `yaml:"UpdateBranchSync"`
+	UpdateBranchAsyncGoroutineNum int64        `yaml:"UpdateBranchAsyncGoroutineNum" default:"1"`
+	LogLevel                      string       `yaml:"LogLevel" default:"info"`
 }
 
 // Config 配置

dtmsvr/svr.go

@@ -46,7 +46,10 @@ func StartSvr() {
 		err := s.Serve(lis)
 		logger.FatalIfError(err)
 	}()
-	go updateBranchAsync()
+
+	for i := 0; i < int(conf.UpdateBranchAsyncGoroutineNum); i++ {
+		go updateBranchAsync()
+	}
 
 	time.Sleep(100 * time.Millisecond)
 	err = dtmdriver.Use(conf.MicroService.Driver)