refactor(fight): 优化战斗逻辑代码结构，清理冗余代码

logic/controller/getserver.go

@@ -3,12 +3,22 @@ package controller
 import (
 	"blazing/common/rpc"
 	"blazing/common/socket/errorcode"
-
 	"blazing/logic/service/user"
 
+	"golang.org/x/sync/singleflight"
+
 	"github.com/panjf2000/gnet/v2"
 )
 
+var sg singleflight.Group
+
+var ServerList []rpc.ServerInfo
+
+func fetchData() (any, error) {
+	ServerList = rpc.GetServerInfoList() //todo 待修改增加缓存
+	return ServerList, nil
+}
+
 // 处理命令: 105
 func (h *Controller) COMMEND_ONLINE(data *user.SidInfo, c gnet.Conn) (result *rpc.CommendSvrInfo, err errorcode.ErrorCode) { //这个时候player应该是空的
 	result = rpc.NewInInfo()
@@ -16,8 +26,9 @@ func (h *Controller) COMMEND_ONLINE(data *user.SidInfo, c gnet.Conn) (result *rp
 	if data.Head.UserID < 100000 {
 		result.IsVip = 1
 	}
+	v, _, _ := sg.Do("GetServerInfoList", fetchData)
 
-	result.ServerList = rpc.GetServerInfoList() //todo 待修改增加缓存
+	result.ServerList = v.([]rpc.ServerInfo) //todo 待修改增加缓存
 
 	return