diff --git a/api/api.go b/api/api.go
index c210255..b5c4518 100644
--- a/api/api.go
+++ b/api/api.go
@@ -50,6 +50,7 @@ type Client struct {
 	RemoteRuleCache  *Rule
 	access           sync.Mutex
 	NodeInfoRspMd5   [16]byte
+	NodeRuleRspMd5   [16]byte
 	UserListCheckNum int
 }
 
diff --git a/api/node.go b/api/node.go
index 6436cb9..200e58a 100644
--- a/api/node.go
+++ b/api/node.go
@@ -2,6 +2,7 @@ package api
 
 import (
 	"bufio"
+	"bytes"
 	md52 "crypto/md5"
 	"fmt"
 	"github.com/go-resty/resty/v2"
@@ -76,7 +77,7 @@ type SSConfig struct {
 type V2rayConfig struct {
 	Inbounds []conf.InboundDetourConfig `json:"inbounds"`
 	Routing  *struct {
-		Rules []Rule `json:"rules"`
+		Rules *json.RawMessage `json:"rules"`
 	} `json:"routing"`
 }
 
@@ -104,10 +105,6 @@ func (c *Client) GetNodeInfo() (nodeInfo *NodeInfo, err error) {
 	switch c.NodeType {
 	case "V2ray":
 		path = "/api/v1/server/Deepbwork/config"
-		res, err = c.client.R().
-			SetQueryParam("local_port", "1").
-			ForceContentType("application/json").
-			Get(path)
 	case "Trojan":
 		path = "/api/v1/server/TrojanTidalab/config"
 	case "Shadowsocks":
@@ -119,13 +116,6 @@ func (c *Client) GetNodeInfo() (nodeInfo *NodeInfo, err error) {
 	default:
 		return nil, fmt.Errorf("unsupported Node type: %s", c.NodeType)
 	}
-	md := md52.Sum(res.Body())
-	if c.NodeInfoRspMd5 != [16]byte{} {
-		if c.NodeInfoRspMd5 == md {
-			return nil, nil
-		}
-	}
-	c.NodeInfoRspMd5 = md
 	res, err = c.client.R().
 		SetQueryParam("local_port", "1").
 		ForceContentType("application/json").
@@ -134,12 +124,25 @@ func (c *Client) GetNodeInfo() (nodeInfo *NodeInfo, err error) {
 	if err != nil {
 		return nil, err
 	}
+	i := bytes.Index(res.Body(), []byte("outbo"))
+	md := md52.Sum(res.Body()[:i])
+	nodeIsNotChange := false
+	if c.NodeInfoRspMd5 != [16]byte{} {
+		if c.NodeInfoRspMd5 == md {
+			nodeIsNotChange = true
+		}
+	}
+	c.NodeInfoRspMd5 = md
 	c.access.Lock()
 	defer c.access.Unlock()
 	switch c.NodeType {
 	case "V2ray":
-		nodeInfo, err = c.ParseV2rayNodeResponse(res.Body())
+		md2 := md52.Sum(res.Body()[i:])
+		nodeInfo, err = c.ParseV2rayNodeResponse(res.Body(), nodeIsNotChange, c.NodeRuleRspMd5 != md2)
 	case "Trojan":
+		if nodeIsNotChange {
+			return nil, nil
+		}
 		nodeInfo, err = c.ParseTrojanNodeResponse(res.Body())
 	}
 	return nodeInfo, nil
@@ -147,7 +150,7 @@ func (c *Client) GetNodeInfo() (nodeInfo *NodeInfo, err error) {
 
 func (c *Client) GetNodeRule() (*[]DetectRule, error) {
 	ruleList := c.LocalRuleList
-	if c.NodeType != "V2ray" {
+	if c.NodeType != "V2ray" || c.RemoteRuleCache == nil {
 		return &ruleList, nil
 	}
 
@@ -162,6 +165,7 @@ func (c *Client) GetNodeRule() (*[]DetectRule, error) {
 		}
 		ruleList = append(ruleList, ruleListItem)
 	}
+	c.RemoteRuleCache = nil
 	return &ruleList, nil
 }
 
@@ -211,18 +215,24 @@ func (c *Client) ParseSSNodeResponse() (*NodeInfo, error) {
 }
 
 // ParseV2rayNodeResponse parse the response for the given nodeinfor format
-func (c *Client) ParseV2rayNodeResponse(body []byte) (*NodeInfo, error) {
+func (c *Client) ParseV2rayNodeResponse(body []byte, notParseNode, parseRule bool) (*NodeInfo, error) {
 	node := &NodeInfo{V2ray: &V2rayConfig{}}
 	err := json.Unmarshal(body, node.V2ray)
 	if err != nil {
 		return nil, fmt.Errorf("unmarshal nodeinfo error: %s", err)
 	}
+	if parseRule {
+		json.Unmarshal(*node.V2ray.Routing.Rules, c.RemoteRuleCache)
+	}
+	node.V2ray.Routing = nil
+	if notParseNode {
+		return nil, nil
+	}
 	node.SpeedLimit = uint64(c.SpeedLimit * 1000000 / 8)
 	node.DeviceLimit = c.DeviceLimit
 	node.NodeType = c.NodeType
 	node.NodeId = c.NodeID
-	c.RemoteRuleCache = &node.V2ray.Routing.Rules[0]
-	node.V2ray.Routing = nil
+
 	if c.EnableXTLS {
 		node.TLSType = "xtls"
 	} else {
diff --git a/api/user.go b/api/user.go
index a3ee031..51aeeda 100644
--- a/api/user.go
+++ b/api/user.go
@@ -69,15 +69,18 @@ func (c *Client) GetUserList() (UserList *[]UserInfo, err error) {
 	if err != nil {
 		return nil, fmt.Errorf("unmarshal userlist error: %s", err)
 	}
-	checkNum := userList.Data[len(userList.Data)-1].UID +
-		userList.Data[len(userList.Data)/2-1].UID +
+	l := len(userList.Data)
+	checkNum := userList.Data[l-1].UID +
+		userList.Data[l/2-1].UID +
 		userList.Data[0].UID
 	if c.UserListCheckNum != 0 {
 		if c.UserListCheckNum == checkNum {
 			return nil, nil
 		}
 	}
-	c.UserListCheckNum = userList.Data[len(userList.Data)-1].UID
+	c.UserListCheckNum = userList.Data[l-1].UID +
+		userList.Data[l/2-1].UID +
+		userList.Data[0].UID
 	return &userList.Data, nil
 }
 
diff --git a/service/controller/controller.go b/service/controller/controller.go
index 44833e9..88f849a 100644
--- a/service/controller/controller.go
+++ b/service/controller/controller.go
@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"log"
 	"math"
+	"reflect"
 	"runtime"
 	"time"
 
@@ -99,6 +100,7 @@ func (c *Controller) Start() error {
 		time.Sleep(time.Duration(c.config.UpdatePeriodic) * time.Second)
 		_ = c.userReportPeriodic.Start()
 	}()
+	runtime.GC()
 	return nil
 }
 
@@ -131,26 +133,28 @@ func (c *Controller) nodeInfoMonitor() (err error) {
 	var nodeInfoChanged = false
 	// If nodeInfo changed
 	if newNodeInfo != nil {
-		// Remove old tag
-		oldtag := c.Tag
-		err := c.removeOldTag(oldtag)
-		if err != nil {
-			log.Print(err)
-			return nil
-		}
-		// Add new tag
-		c.nodeInfo = newNodeInfo
-		c.Tag = c.buildNodeTag()
-		err = c.addNewTag(newNodeInfo)
-		if err != nil {
-			log.Print(err)
-			return nil
-		}
-		nodeInfoChanged = true
-		// Remove Old limiter
-		if err = c.DeleteInboundLimiter(oldtag); err != nil {
-			log.Print(err)
-			return nil
+		if !reflect.DeepEqual(c.nodeInfo, newNodeInfo) {
+			// Remove old tag
+			oldtag := c.Tag
+			err := c.removeOldTag(oldtag)
+			if err != nil {
+				log.Print(err)
+				return nil
+			}
+			// Add new tag
+			c.nodeInfo = newNodeInfo
+			c.Tag = c.buildNodeTag()
+			err = c.addNewTag(newNodeInfo)
+			if err != nil {
+				log.Print(err)
+				return nil
+			}
+			nodeInfoChanged = true
+			// Remove Old limiter
+			if err = c.DeleteInboundLimiter(oldtag); err != nil {
+				log.Print(err)
+				return nil
+			}
 		}
 	}
 
@@ -158,7 +162,7 @@ func (c *Controller) nodeInfoMonitor() (err error) {
 	if !c.config.DisableGetRule {
 		if ruleList, err := c.apiClient.GetNodeRule(); err != nil {
 			log.Printf("Get rule list filed: %s", err)
-		} else if len(*ruleList) > 0 {
+		} else if ruleList != nil {
 			if err := c.UpdateRule(c.Tag, *ruleList); err != nil {
 				log.Print(err)
 			}
@@ -185,9 +189,6 @@ func (c *Controller) nodeInfoMonitor() (err error) {
 		log.Print(err)
 		return nil
 	}
-	if newUserInfo == nil {
-		return nil
-	}
 	if nodeInfoChanged {
 		if newUserInfo != nil {
 			c.userList = newUserInfo
@@ -197,12 +198,15 @@ func (c *Controller) nodeInfoMonitor() (err error) {
 			log.Print(err)
 			return nil
 		}
+		newNodeInfo = nil
 		// Add Limiter
 		if err := c.AddInboundLimiter(c.Tag, newUserInfo); err != nil {
 			log.Print(err)
 			return nil
 		}
-	} else {
+		newUserInfo = nil
+		runtime.GC()
+	} else if newUserInfo != nil {
 		deleted, added := compareUserList(c.userList, newUserInfo)
 		if len(deleted) > 0 {
 			deletedEmail := make([]string, len(deleted))
@@ -229,8 +233,9 @@ func (c *Controller) nodeInfoMonitor() (err error) {
 		log.Printf("[%s: %d] %d user deleted, %d user added", c.nodeInfo.NodeType, c.nodeInfo.NodeId,
 			len(deleted), len(added))
 		c.userList = newUserInfo
+		newUserInfo = nil
+		runtime.GC()
 	}
-	runtime.GC()
 	return nil
 }
 
@@ -361,11 +366,11 @@ func compareUserList(old, new *[]api.UserInfo) (deleted, added []int) {
 func (c *Controller) userInfoMonitor() (err error) {
 	// Get User traffic
 	userTraffic := make([]api.UserTraffic, 0)
-	for _, user := range *c.userList {
-		up, down := c.getTraffic(c.buildUserTag(&user))
+	for i := range *c.userList {
+		up, down := c.getTraffic(c.buildUserTag(&(*c.userList)[i]))
 		if up > 0 || down > 0 {
 			userTraffic = append(userTraffic, api.UserTraffic{
-				UID:      user.UID,
+				UID:      (*c.userList)[i].UID,
 				Upload:   up,
 				Download: down})
 		}
@@ -389,6 +394,8 @@ func (c *Controller) userInfoMonitor() (err error) {
 	} else {
 		log.Printf("[%s: %d] Report %d illegal behaviors", c.nodeInfo.NodeType, c.nodeInfo.NodeId, len(*detectResult))
 	}
+	userTraffic = nil
+	runtime.GC()
 	return nil
 }
 
diff --git a/service/controller/inboundbuilder.go b/service/controller/inboundbuilder.go
index 5232a49..e828b1e 100644
--- a/service/controller/inboundbuilder.go
+++ b/service/controller/inboundbuilder.go
@@ -16,7 +16,9 @@ import (
 func InboundBuilder(config *Config, nodeInfo *api.NodeInfo, tag string) (*core.InboundHandlerConfig, error) {
 	var proxySetting interface{}
 	if nodeInfo.NodeType == "V2ray" {
-		defer func() { nodeInfo.V2ray = nil }()
+		defer func() {
+			nodeInfo.V2ray = nil
+		}()
 		if nodeInfo.EnableVless {
 			nodeInfo.V2ray.Inbounds[0].Protocol = "vless"
 			// Enable fallback
@@ -40,7 +42,10 @@ func InboundBuilder(config *Config, nodeInfo *api.NodeInfo, tag string) (*core.I
 			proxySetting = &conf.VMessInboundConfig{}
 		}
 	} else if nodeInfo.NodeType == "Trojan" {
-		defer func() { nodeInfo.V2ray = nil; nodeInfo.Trojan = nil }()
+		defer func() {
+			nodeInfo.V2ray = nil
+			nodeInfo.Trojan = nil
+		}()
 		nodeInfo.V2ray = &api.V2rayConfig{}
 		nodeInfo.V2ray.Inbounds = make([]conf.InboundDetourConfig, 1)
 		nodeInfo.V2ray.Inbounds[0].Protocol = "trojan"
@@ -63,6 +68,10 @@ func InboundBuilder(config *Config, nodeInfo *api.NodeInfo, tag string) (*core.I
 		t := conf.TransportProtocol(nodeInfo.SS.TransportProtocol)
 		nodeInfo.V2ray.Inbounds[0].StreamSetting = &conf.StreamConfig{Network: &t}
 	} else if nodeInfo.NodeType == "Shadowsocks" {
+		defer func() {
+			nodeInfo.V2ray = nil
+			nodeInfo.SS = nil
+		}()
 		defer func() { nodeInfo.V2ray = nil; nodeInfo.SS = nil }()
 		nodeInfo.V2ray = &api.V2rayConfig{}
 		nodeInfo.V2ray.Inbounds = []conf.InboundDetourConfig{{Protocol: "shadowsocks"}}