diff --git a/build.sh b/build.sh
index 68bbc6b..ae6ee08 100755
--- a/build.sh
+++ b/build.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 
 rm ./dist
-CGO_ENABLED=0 go build -a --installsuffix cgo --ldflags="-s" -o ./_docker/bin/member_gateway_rpc
+CGO_ENABLED=0 go build -a --installsuffix cgo --ldflags="-s" -o ./dist/member_gateway_rpc
 
 docker build -t docker.loafle.net/overflow/member_gateway_rpc:1.0.0 .
 
diff --git a/servlet/webapp-servlet.go b/servlet/webapp-servlet.go
index 2a27bfc..959d5ae 100644
--- a/servlet/webapp-servlet.go
+++ b/servlet/webapp-servlet.go
@@ -12,6 +12,8 @@ import (
 	ogs "git.loafle.net/overflow/gateway/subscribe"
 	ogrs "git.loafle.net/overflow/gateway_rpc/servlet"
 	"git.loafle.net/overflow/member_gateway_rpc/subscribe"
+
+
 	"github.com/dgrijalva/jwt-go"
 	"github.com/satori/go.uuid"
 	"github.com/valyala/fasthttp"
@@ -27,7 +29,7 @@ type WebappServlets struct {
 	VerifyKey *rsa.PublicKey
 	SignKey   *rsa.PrivateKey
 
-	connections sync.Map
+	sessions sync.Map
 }
 
 func (s *WebappServlets) Init(serverCtx server.ServerCtx) error {
@@ -103,7 +105,7 @@ func (s *WebappServlets) OnConnect(servletCtx server.ServletCtx, conn socket.Con
 	sessionID := servletCtx.GetAttribute(og.SessionIDKey)
 	targetID := servletCtx.GetAttribute(og.SessionTargetIDKey)
 	if nil != sessionID && nil != targetID {
-		s.connections.Store(sessionID.(string), retainConnection(targetID.(string), servletCtx))
+		s.sessions.Store(sessionID.(string), ogrs.RetainSession(targetID.(string), servletCtx))
 	}
 }
 
@@ -112,7 +114,7 @@ func (s *WebappServlets) OnDisconnect(servletCtx server.ServletCtx) {
 
 	sessionID := servletCtx.GetAttribute(og.SessionIDKey)
 	if nil != sessionID {
-		s.connections.Delete(sessionID.(string))
+		s.sessions.Delete(sessionID.(string))
 	}
 }
 
@@ -126,13 +128,13 @@ func (s *WebappServlets) handleSubscribe(serverCtx server.ServerCtx, subscribeCh
 			switch msg.TargetType {
 			case ogs.MEMBER:
 				for _, targetID := range msg.Targets {
-					_connections := s.getMemberConnections(targetID)
-					if nil == _connections || 0 == len(_connections) {
+					_sessions := s.getMemberSessions(targetID)
+					if nil == _sessions || 0 == len(_sessions) {
 						break
 					}
 
-					for _, _connection := range _connections {
-						_writeChan := _connection.servletCtx.GetAttribute(og.SessionWriteChanKey)
+					for _, _session := range _sessions {
+						_writeChan := _session.ServletCtx.GetAttribute(og.SessionWriteChanKey)
 						if nil != _writeChan {
 							writeChan := _writeChan.(chan<- []byte)
 							writeChan <- msg.Message
@@ -142,13 +144,13 @@ func (s *WebappServlets) handleSubscribe(serverCtx server.ServerCtx, subscribeCh
 
 			case ogs.MEMBER_SESSION:
 				for _, sessionID := range msg.Targets {
-					__connection, ok := s.connections.Load(sessionID)
+					_session, ok := s.sessions.Load(sessionID)
 					if !ok {
 						logging.Logger().Debugf("Client[%s] is not exist", sessionID)
 						break
 					}
-					_connection := __connection.(*connection)
-					_writeChan := _connection.servletCtx.GetAttribute(og.SessionWriteChanKey)
+					session := _session.(*ogrs.Session)
+					_writeChan := session.ServletCtx.GetAttribute(og.SessionWriteChanKey)
 					if nil != _writeChan {
 						writeChan := _writeChan.(chan<- []byte)
 						writeChan <- msg.Message
@@ -161,45 +163,16 @@ func (s *WebappServlets) handleSubscribe(serverCtx server.ServerCtx, subscribeCh
 	}
 }
 
-func (s *WebappServlets) getMemberConnections(targetID string) []*connection {
-	var connections []*connection
+func (s *WebappServlets) getMemberSessions(targetID string) []*ogrs.Session {
+	var sessions []*ogrs.Session
 
-	s.connections.Range(func(k, v interface{}) bool {
-		_connection := v.(*connection)
-		if _connection.targetID == targetID {
-			connections = append(connections, _connection)
+	s.sessions.Range(func(k, v interface{}) bool {
+		session := v.(*ogrs.Session)
+		if session.TargetID == targetID {
+			sessions = append(sessions, session)
 		}
 		return true
 	})
 
-	return connections
-}
-
-type connection struct {
-	targetID   string
-	servletCtx server.ServletCtx
-}
-
-var connectionPool sync.Pool
-
-func retainConnection(targetID string, servletCtx server.ServletCtx) *connection {
-	v := connectionPool.Get()
-	var _connection *connection
-	if v == nil {
-		_connection = &connection{}
-	} else {
-		_connection = v.(*connection)
-	}
-
-	_connection.targetID = targetID
-	_connection.servletCtx = servletCtx
-
-	return _connection
-}
-
-func releaseConnection(_connection *connection) {
-	_connection.targetID = ""
-	_connection.servletCtx = nil
-
-	connectionPool.Put(_connection)
+	return sessions
 }