diff --git a/client/client-handler.go b/client/client-handler.go
new file mode 100644
index 0000000..3c035b4
--- /dev/null
+++ b/client/client-handler.go
@@ -0,0 +1,85 @@
+package client
+
+import (
+	"fmt"
+	"reflect"
+	"sync/atomic"
+
+	logging "git.loafle.net/commons/logging-go"
+	crc "git.loafle.net/commons/rpc-go/client"
+	occi "git.loafle.net/overflow/commons-go/core/interfaces"
+)
+
+type ClientHandler interface {
+	crc.ClientHandler
+}
+
+type ClientHandlers struct {
+	crc.ClientHandlers
+
+	Services        []interface{}
+	OrderedServices []reflect.Type
+
+	validated atomic.Value
+}
+
+func (ch *ClientHandlers) Init(clientCtx crc.ClientCtx) error {
+	if err := ch.ClientHandlers.Init(clientCtx); nil != err {
+		return err
+	}
+
+	if err := occi.ExecServices(ch.Services, occi.ServiceMethodInit, ch.OrderedServices, false); nil != err {
+		return err
+	}
+
+	return nil
+}
+
+func (ch *ClientHandlers) OnStart(clientCtx crc.ClientCtx) error {
+	if err := ch.ClientHandlers.OnStart(clientCtx); nil != err {
+		return err
+	}
+
+	if err := occi.ExecServices(ch.Services, occi.ServiceMethodStart, ch.OrderedServices, false); nil != err {
+		return err
+	}
+
+	return nil
+}
+
+func (ch *ClientHandlers) OnStop(clientCtx crc.ClientCtx) {
+	if err := occi.ExecServices(ch.Services, occi.ServiceMethodStop, ch.OrderedServices, true); nil != err {
+		logging.Logger().Errorf("Container[%s]: Service stop err %v", ch.Name, err)
+	}
+
+	ch.ClientHandlers.OnStop(clientCtx)
+}
+
+func (ch *ClientHandlers) Destroy(clientCtx crc.ClientCtx) {
+	if err := occi.ExecServices(ch.Services, occi.ServiceMethodDestroy, ch.OrderedServices, true); nil != err {
+		logging.Logger().Errorf("Container[%s]: Service destroy err %v", ch.Name, err)
+	}
+
+	ch.ClientHandlers.Destroy(clientCtx)
+}
+
+func (ch *ClientHandlers) Validate() error {
+	if nil != ch.validated.Load() {
+		return nil
+	}
+	ch.validated.Store(true)
+
+	if err := ch.ClientHandlers.Validate(); nil != err {
+		return err
+	}
+
+	if nil == ch.Services {
+		return fmt.Errorf("Services is not valid")
+	}
+
+	if nil == ch.OrderedServices {
+		return fmt.Errorf("OrderedServices is not valid")
+	}
+
+	return nil
+}
diff --git a/client/client.go b/client/client.go
new file mode 100644
index 0000000..99f1463
--- /dev/null
+++ b/client/client.go
@@ -0,0 +1,71 @@
+package client
+
+import (
+	"fmt"
+	"net/url"
+	"path"
+	"reflect"
+
+	"git.loafle.net/commons/logging-go"
+	crc "git.loafle.net/commons/rpc-go/client"
+	crpj "git.loafle.net/commons/rpc-go/protocol/json"
+	csswc "git.loafle.net/commons/server-go/socket/web/client"
+	occc "git.loafle.net/overflow/commons-go/config/container"
+	occp "git.loafle.net/overflow/commons-go/config/probe"
+)
+
+func New(containerType occp.ContainerType, services []interface{}, orderedServices []reflect.Type, portNumber int) (*crc.Client, error) {
+	connector, err := newConnector(containerType.String(), portNumber)
+	if nil != err {
+		return nil, err
+	}
+
+	codec := crpj.NewClientCodec()
+
+	var rpcRegistry crr.RPCRegistry
+	if nil != services && 0 < len(services) {
+		rpcRegistry = crr.NewRPCRegistry()
+		rpcRegistry.RegisterServices(services...)
+	}
+
+	ch := &ClientHandlers{
+		Services:        services,
+		OrderedServices: orderedServices,
+	}
+	ch.Name = containerType.String()
+	ch.Connector = connector
+	ch.RPCCodec = codec
+	ch.RPCInvoker = rpcRegistry
+
+	return nil, &crc.Client{
+		ClientHandler: ch,
+	}
+}
+
+func newConnector(containerType occp.ContainerType, portNumber int) (*csswc.Connectors, error) {
+	u := url.URL{
+		Scheme: "ws",
+		Host:   fmt.Sprintf("127.0.0.1:%d", port),
+	}
+	u.Path = path.Join(u.Path, occc.HTTPEntry_Container)
+
+	connector := &csswc.Connectors{
+		Name: containerType.String(),
+		URL:  u.String(),
+	}
+
+	connector.ReconnectInterval = 5
+	connector.ReconnectTryTime = 2
+	connector.MaxMessageSize = 4096
+	connector.ReadBufferSize = 4096
+	connector.WriteBufferSize = 4096
+	connector.PongTimeout = 60
+	connector.PingTimeout = 10
+	connector.PingPeriod = 9
+
+	connector.OnDisconnected = func(connector csc.Connector) {
+		logging.Logger().Debugf("Client[%s] has been disconnected", connector.GetName())
+	}
+
+	return connector, nil
+}
diff --git a/server/server-handler.go b/server/server-handler.go
deleted file mode 100644
index 973982a..0000000
--- a/server/server-handler.go
+++ /dev/null
@@ -1,119 +0,0 @@
-package server
-
-import (
-	"fmt"
-	"io/ioutil"
-	"net"
-	"os"
-	"reflect"
-	"strconv"
-
-	logging "git.loafle.net/commons/logging-go"
-	"git.loafle.net/commons/server-go"
-	cssn "git.loafle.net/commons/server-go/socket/net"
-	occi "git.loafle.net/overflow/commons-go/core/interfaces"
-)
-
-type ServerHandler interface {
-	cssn.ServerHandler
-}
-
-type ServerHandlers struct {
-	cssn.ServerHandlers
-
-	PIDFilePath     string
-	Services        []interface{}
-	OrderedServices []reflect.Type
-
-	port int
-}
-
-func (sh *ServerHandlers) Init(serverCtx server.ServerCtx) error {
-	if err := sh.ServerHandlers.Init(serverCtx); nil != err {
-		return err
-	}
-
-	if err := occi.ExecServices(sh.Services, occi.ServiceMethodInit, sh.OrderedServices, false); nil != err {
-		return err
-	}
-
-	return nil
-}
-
-func (sh *ServerHandlers) OnStart(serverCtx server.ServerCtx) error {
-	if err := sh.ServerHandlers.OnStart(serverCtx); nil != err {
-		return err
-	}
-
-	if err := occi.ExecServices(sh.Services, occi.ServiceMethodStart, sh.OrderedServices, false); nil != err {
-		return err
-	}
-
-	if _, err := os.Stat(sh.PIDFilePath); os.IsExist(err) {
-		if err := os.Remove(sh.PIDFilePath); nil != err {
-			logging.Logger().Errorf("Container[%s]: Removing pid file has been failed [%v]", sh.Name, err)
-		}
-	}
-
-	s := strconv.FormatInt(int64(sh.port), 10)
-	if err := ioutil.WriteFile(sh.PIDFilePath, []byte(s), os.ModePerm); nil != err {
-		return err
-	}
-
-	return nil
-}
-
-func (sh *ServerHandlers) OnStop(serverCtx server.ServerCtx) {
-	if err := occi.ExecServices(sh.Services, occi.ServiceMethodStop, sh.OrderedServices, true); nil != err {
-		logging.Logger().Errorf("Container[%s]: Service stop err %v", sh.Name, err)
-	}
-
-	if _, err := os.Stat(sh.PIDFilePath); os.IsExist(err) {
-		if err := os.Remove(sh.PIDFilePath); nil != err {
-			logging.Logger().Errorf("Container: Removing pid file has been failed [%v]", err)
-		}
-	}
-
-	sh.ServerHandlers.OnStop(serverCtx)
-}
-
-func (sh *ServerHandlers) Destroy(serverCtx server.ServerCtx) {
-	if err := occi.ExecServices(sh.Services, occi.ServiceMethodDestroy, sh.OrderedServices, true); nil != err {
-		logging.Logger().Errorf("Container[%s]: Service destroy err %v", sh.Name, err)
-	}
-
-	sh.ServerHandlers.Destroy(serverCtx)
-}
-
-func (sh *ServerHandlers) Listener(serverCtx server.ServerCtx) (net.Listener, error) {
-	for i := 60000; i < 61000; i++ {
-		addr := fmt.Sprintf("localhost:%d", i)
-		l, err := net.Listen("tcp", addr)
-		if nil == err {
-			sh.port = i
-			return l, nil
-		}
-	}
-
-	return nil, fmt.Errorf("Container[%s]: Cannot find availrable port", sh.Name)
-}
-
-func (sh *ServerHandlers) Validate() error {
-	if err := sh.ServerHandlers.Validate(); nil != err {
-		return err
-	}
-
-	if "" == sh.PIDFilePath {
-		return fmt.Errorf("Container[%s]: The path of pid file must be specified", sh.Name)
-	}
-
-	if nil == sh.Services {
-		return fmt.Errorf("Container[%s]: Services must be specified", sh.Name)
-	}
-
-	if nil == sh.OrderedServices {
-		return fmt.Errorf("Container[%s]: OrderedServices must be specified", sh.Name)
-	}
-
-	return nil
-}
diff --git a/service/CollectorService.go b/service/CollectorService.go
new file mode 100644
index 0000000..b06874e
--- /dev/null
+++ b/service/CollectorService.go
@@ -0,0 +1,97 @@
+package service
+
+import (
+	"fmt"
+	"reflect"
+	"strconv"
+	"time"
+
+	cda "git.loafle.net/commons/di-go/annotation"
+	cdr "git.loafle.net/commons/di-go/registry"
+	logging "git.loafle.net/commons/logging-go"
+	cuts "git.loafle.net/commons/util-go/time/scheduler"
+	cutss "git.loafle.net/commons/util-go/time/scheduler/storage"
+	ocmsc "git.loafle.net/overflow/commons-go/model/sensorconfig"
+	ocsp "git.loafle.net/overflow/commons-go/service/probe"
+
+	// For annotation
+	_ "git.loafle.net/overflow/commons-go/core/annotation"
+)
+
+var CollectorServiceType = reflect.TypeOf((*CollectorService)(nil))
+
+func init() {
+	cdr.RegisterType(CollectorServiceType)
+}
+
+type CollectorService struct {
+	ocsp.CollectorService
+	cda.TypeAnnotation `annotation:"@overflow:RPCService()"`
+
+	ProbeClientService  *ProbeClientService  `annotation:"@Inject()"`
+	CrawlerService      *CrawlerService      `annotation:"@Inject()"`
+	SensorConfigService *SensorConfigService `annotation:"@Inject()"`
+
+	scheduler *cuts.Scheduler
+}
+
+func (s *CollectorService) InitService() error {
+	_storage := cutss.NewMemoryStorage()
+	s.scheduler = cuts.New(_storage)
+
+	return nil
+}
+
+func (s *CollectorService) StartService() error {
+	if err := s.scheduler.Start(); nil != err {
+		return err
+	}
+
+	if err := s.addScheduleAll(); nil != err {
+		return err
+	}
+	return nil
+}
+
+func (s *CollectorService) StopService() {
+	s.scheduler.Stop()
+}
+
+func (s *CollectorService) DestroyService() {
+
+}
+
+func (s *CollectorService) addScheduleAll() error {
+	sensorConfigs := s.SensorConfigService.sensorConfigs
+	if nil == sensorConfigs || 0 == len(sensorConfigs) {
+		return nil
+	}
+
+	for _, sensorConfig := range sensorConfigs {
+		interval, err := strconv.ParseInt(sensorConfig.Schedule.Interval, 10, 64)
+		if nil != err {
+			return fmt.Errorf("Cannot convert interval[%s] %v", sensorConfig.Schedule.Interval, err)
+		}
+		s.addSchedule(interval, sensorConfig)
+	}
+
+	return nil
+}
+
+func (s *CollectorService) addSchedule(interval int64, sensorConfig *ocmsc.SensorConfig) {
+	s.scheduler.RunEvery(time.Duration(interval)*time.Second, s.collectTask, sensorConfig)
+}
+
+func (s *CollectorService) collectTask(sensorConfig *ocmsc.SensorConfig) {
+	logging.Logger().Debugf("CollectorService.collectTask for sensor config id[%s] of crawler[%s]", sensorConfig.ConfigID, sensorConfig.Crawler.Name)
+
+	result, err := s.CrawlerService.Get(sensorConfig.ConfigID)
+	if nil != err {
+		logging.Logger().Errorf("Cannot get data from crawler[%s] %v", sensorConfig.Crawler.Name, err)
+		return
+	}
+
+	if err := s.ProbeClientService.Send("DataService.Metric", result); nil != err {
+		logging.Logger().Errorf("Cannot send data from config id[%s] of crawler[%s] %v", sensorConfig.ConfigID, sensorConfig.Crawler.Name, err)
+	}
+}
diff --git a/service/ProbeClientService.go b/service/ProbeClientService.go
new file mode 100644
index 0000000..45c9cdb
--- /dev/null
+++ b/service/ProbeClientService.go
@@ -0,0 +1,45 @@
+package service
+
+import (
+	"reflect"
+
+	cda "git.loafle.net/commons/di-go/annotation"
+	cdr "git.loafle.net/commons/di-go/registry"
+	crc "git.loafle.net/commons/rpc-go/client"
+
+	// For annotation
+	_ "git.loafle.net/overflow/commons-go/core/annotation"
+)
+
+var ProbeClientServiceType = reflect.TypeOf((*ProbeClientService)(nil))
+
+func init() {
+	cdr.RegisterType(ProbeClientServiceType)
+}
+
+type ProbeClientService struct {
+	cda.TypeAnnotation `annotation:"@overflow:RPCService()"`
+
+	Client *crc.Client `annotation:"@Resource(name='CONTAINER_CLIENT')"`
+}
+
+func (s *ProbeClientService) InitService() error {
+	return nil
+}
+
+func (s *ProbeClientService) StartService() error {
+
+	return nil
+}
+
+func (s *ProbeClientService) StopService() {
+
+}
+
+func (s *ProbeClientService) DestroyService() {
+
+}
+
+func (s *ProbeClientService) Send(method string, params ...interface{}) error {
+	return s.Client.Send(method, params...)
+}
diff --git a/service/ProbeService.go b/service/ProbeService.go
deleted file mode 100644
index c6d2c86..0000000
--- a/service/ProbeService.go
+++ /dev/null
@@ -1,52 +0,0 @@
-package service
-
-import (
-	"fmt"
-	"reflect"
-
-	cda "git.loafle.net/commons/di-go/annotation"
-	cdr "git.loafle.net/commons/di-go/registry"
-	"git.loafle.net/overflow/container-go"
-
-	// For annotation
-	_ "git.loafle.net/overflow/commons-go/core/annotation"
-)
-
-var ProbeServiceType = reflect.TypeOf((*ProbeService)(nil))
-
-func init() {
-	cdr.RegisterType(ProbeServiceType)
-}
-
-type ProbeService struct {
-	cda.TypeAnnotation `annotation:"@overflow:RPCService()"`
-
-	RPCWriteChan chan<- *container.RPCNotification `annotation:"@Resource(name='CONTAINER_RPC_WRITE_CHAN')"`
-}
-
-func (s *ProbeService) InitService() error {
-	return nil
-}
-
-func (s *ProbeService) StartService() error {
-
-	return nil
-}
-
-func (s *ProbeService) StopService() {
-
-}
-
-func (s *ProbeService) DestroyService() {
-
-}
-
-func (s *ProbeService) Send(method string, params ...interface{}) error {
-	select {
-	case s.RPCWriteChan <- &container.RPCNotification{Method: method, Params: params}:
-	default:
-		return fmt.Errorf("cannot write to rpcWriteChan")
-	}
-
-	return nil
-}
diff --git a/service/service.go b/service/service.go
index bb49d6a..2f8c342 100644
--- a/service/service.go
+++ b/service/service.go
@@ -4,9 +4,10 @@ import "reflect"
 
 var (
 	OrderedServices = []reflect.Type{
-		ProbeServiceType,
+		ProbeClientServiceType,
 		SensorConfigServiceType,
 		CrawlerServiceType,
+		CollectorServiceType,
 	}
 )
 
diff --git a/servlet/rpc-servlet.go b/servlet/rpc-servlet.go
deleted file mode 100644
index c6ef0eb..0000000
--- a/servlet/rpc-servlet.go
+++ /dev/null
@@ -1,129 +0,0 @@
-package servlet
-
-import (
-	"net"
-
-	"git.loafle.net/commons/logging-go"
-	crp "git.loafle.net/commons/rpc-go/protocol"
-	crr "git.loafle.net/commons/rpc-go/registry"
-	"git.loafle.net/commons/server-go"
-	css "git.loafle.net/commons/server-go/socket"
-	cssn "git.loafle.net/commons/server-go/socket/net"
-	"git.loafle.net/overflow/container-go"
-)
-
-type RPCServlet interface {
-	cssn.Servlet
-}
-
-type RPCServlets struct {
-	cssn.Servlets
-
-	RPCServerCodec crp.ServerCodec
-	RPCInvoker     crr.RPCInvoker
-	RPCWriteChan   <-chan *container.RPCNotification
-}
-
-func (s *RPCServlets) Handshake(servletCtx server.ServletCtx, conn net.Conn) error {
-	return nil
-}
-
-func (s *RPCServlets) OnConnect(servletCtx server.ServletCtx, conn css.Conn) {
-	s.Servlets.OnConnect(servletCtx, conn)
-
-}
-
-func (s *RPCServlets) OnDisconnect(servletCtx server.ServletCtx) {
-	s.Servlets.OnDisconnect(servletCtx)
-}
-
-func (s *RPCServlets) Handle(servletCtx server.ServletCtx,
-	stopChan <-chan struct{}, doneChan chan<- struct{},
-	readChan <-chan []byte, writeChan chan<- []byte) {
-	defer func() {
-		doneChan <- struct{}{}
-	}()
-
-	var (
-		src       crp.ServerRequestCodec
-		reply     interface{}
-		replyBuff []byte
-		err       error
-	)
-
-	go s.handleRPCWrite(stopChan, writeChan)
-
-	for {
-		select {
-		case msg, ok := <-readChan:
-			if !ok {
-				return
-			}
-			// grpc exec method call
-			src, err = s.RPCServerCodec.NewRequest(msg)
-			if nil != err {
-				logging.Logger().Error(err)
-				break
-			}
-
-			reply, err = s.RPCInvoker.Invoke(src)
-			if !src.HasResponse() {
-				break
-			}
-			replyBuff, err = src.NewResponse(reply, err)
-			if nil != err {
-				logging.Logger().Error(err)
-				s.writeError(src, writeChan, crp.E_INTERNAL, "", err)
-				break
-			}
-
-			writeChan <- replyBuff
-		case <-stopChan:
-			return
-		}
-	}
-}
-
-func (s *RPCServlets) handleRPCWrite(stopChan <-chan struct{}, writeChan chan<- []byte) {
-	var (
-		buf []byte
-		err error
-	)
-	for {
-		select {
-		case noti, ok := <-s.RPCWriteChan:
-			if !ok {
-				break
-			}
-
-			buf, err = s.RPCServerCodec.NewNotification(noti.Method, noti.Params)
-			if nil != err {
-				logging.Logger().Error(err)
-				break
-			}
-
-			writeChan <- buf
-		case <-stopChan:
-			return
-		}
-	}
-}
-
-func (s *RPCServlets) writeError(src crp.ServerRequestCodec, writeChan chan<- []byte, code crp.ErrorCode, message string, data interface{}) {
-	if !src.HasResponse() {
-		return
-	}
-
-	pErr := &crp.Error{
-		Code:    code,
-		Message: message,
-		Data:    data,
-	}
-
-	buf, err := src.NewResponse(nil, pErr)
-	if nil != err {
-		logging.Logger().Error(err)
-		return
-	}
-	writeChan <- buf
-}