diff --git a/README.md b/README.md
index c6a6675..ad31fcf 100644
--- a/README.md
+++ b/README.md
@@ -1,12 +1,12 @@
 <div align="center" style="background-color: white">
   <img width="500" style="max-width:100%" src="https://raw.githubusercontent.com/naiba/nezha/master/resource/static/brand.png" title="哪吒监控">
   <br><br>
-<img src="https://img.shields.io/github/workflow/status/naiba/nezha/Dashboard%20image?label=Dash%20v0.4.15&logo=github&style=for-the-badge">&nbsp;<img src="https://img.shields.io/github/v/release/naiba/nezha?color=brightgreen&label=Agent&style=for-the-badge&logo=github">&nbsp;<img src="https://img.shields.io/github/workflow/status/naiba/nezha/Agent%20release?label=Agent%20CI&logo=github&style=for-the-badge">&nbsp;<img src="https://img.shields.io/badge/Installer-v0.4.10-brightgreen?style=for-the-badge&logo=linux">
+<img src="https://img.shields.io/github/workflow/status/naiba/nezha/Dashboard%20image?label=Dash%20v0.5.0&logo=github&style=for-the-badge">&nbsp;<img src="https://img.shields.io/github/v/release/naiba/nezha?color=brightgreen&label=Agent&style=for-the-badge&logo=github">&nbsp;<img src="https://img.shields.io/github/workflow/status/naiba/nezha/Agent%20release?label=Agent%20CI&logo=github&style=for-the-badge">&nbsp;<img src="https://img.shields.io/badge/Installer-v0.4.10-brightgreen?style=for-the-badge&logo=linux">
   <br>
   <p>:trollface: 哪吒监控 一站式轻监控轻运维系统。支持系统状态、HTTP(SSL 证书变更、即将到期、到期)、TCP、Ping 监控报警，命令批量执行和计划任务。</p>	
 </div>
 
-\>> QQ 交流群： ~~955957790~~ 已解散，**自2021年3月26起不再提供技术支持，接受PR。**<br>
+\>> QQ 交流群： ~~955957790~~ 已解散，**自 2021 年 3 月 26 日起不再提供技术支持，接受 PR。**<br>
 \>> 交流论坛：正在选型搭建中…… 欢迎想建设社区的铁子与奶爸取得联系。
 
 \>> [我们的用户](https://www.google.com/search?q="powered+by+哪吒监控%7C哪吒面板"&filter=0) (Google)
diff --git a/cmd/dashboard/controller/common_page.go b/cmd/dashboard/controller/common_page.go
index 68a0693..2d9cca3 100644
--- a/cmd/dashboard/controller/common_page.go
+++ b/cmd/dashboard/controller/common_page.go
@@ -3,7 +3,6 @@ package controller
 import (
 	"errors"
 	"fmt"
-	"log"
 	"net/http"
 	"time"
 
@@ -80,79 +79,8 @@ func (p *commonPage) checkViewPassword(c *gin.Context) {
 	c.Next()
 }
 
-type ServiceItem struct {
-	Monitor     model.Monitor
-	TotalUp     uint64
-	TotalDown   uint64
-	CurrentUp   uint64
-	CurrentDown uint64
-	Delay       *[30]float32
-	Up          *[30]int
-	Down        *[30]int
-}
-
 func (p *commonPage) service(c *gin.Context) {
-	var msm map[uint64]*ServiceItem
-
-	var cached bool
-	if _, has := c.Get(model.CtxKeyAuthorizedUser); !has {
-		data, has := dao.Cache.Get(model.CacheKeyServicePage)
-		if has {
-			log.Println("use cache")
-			msm = data.(map[uint64]*ServiceItem)
-			cached = true
-		}
-	}
-
-	if !cached {
-		msm = make(map[uint64]*ServiceItem)
-		var ms []model.Monitor
-		dao.DB.Find(&ms)
-		year, month, day := time.Now().Date()
-		today := time.Date(year, month, day, 0, 0, 0, 0, time.Local)
-		var mhs []model.MonitorHistory
-		dao.DB.Where("created_at >= ?", today.AddDate(0, 0, -29)).Find(&mhs)
-
-		for i := 0; i < len(ms); i++ {
-			msm[ms[i].ID] = &ServiceItem{
-				Monitor: ms[i],
-				Delay:   &[30]float32{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-				Up:      &[30]int{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-				Down:    &[30]int{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-			}
-		}
-		// 整合数据
-		todayStatus := make(map[uint64][]bool)
-		for i := 0; i < len(mhs); i++ {
-			dayIndex := 29
-			if mhs[i].CreatedAt.Before(today) {
-				dayIndex = 28 - (int(today.Sub(mhs[i].CreatedAt).Hours()) / 24)
-			} else {
-				todayStatus[mhs[i].MonitorID] = append(todayStatus[mhs[i].MonitorID], mhs[i].Successful)
-			}
-			if mhs[i].Successful {
-				msm[mhs[i].MonitorID].TotalUp++
-				msm[mhs[i].MonitorID].Delay[dayIndex] = (msm[mhs[i].MonitorID].Delay[dayIndex]*float32(msm[mhs[i].MonitorID].Up[dayIndex]) + mhs[i].Delay) / float32(msm[mhs[i].MonitorID].Up[dayIndex]+1)
-				msm[mhs[i].MonitorID].Up[dayIndex]++
-			} else {
-				msm[mhs[i].MonitorID].TotalDown++
-				msm[mhs[i].MonitorID].Down[dayIndex]++
-			}
-		}
-		// 当日最后 20 个采样作为当前状态
-		for _, m := range msm {
-			for i := len(todayStatus[m.Monitor.ID]) - 1; i >= 0 && i >= (len(todayStatus[m.Monitor.ID])-1-20); i-- {
-				if todayStatus[m.Monitor.ID][i] {
-					m.CurrentUp++
-				} else {
-					m.CurrentDown++
-				}
-			}
-		}
-		// 未登录人员缓存十分钟
-		dao.Cache.Set(model.CacheKeyServicePage, msm, time.Minute*10)
-	}
-
+	msm := dao.ServiceSentinelShared.LoadStats()
 	c.HTML(http.StatusOK, "theme-"+dao.Conf.Site.Theme+"/service", mygin.CommonEnvironment(c, gin.H{
 		"Title":      "服务状态",
 		"Services":   msm,
diff --git a/cmd/dashboard/controller/member_api.go b/cmd/dashboard/controller/member_api.go
index e557cc9..4fd1cb1 100644
--- a/cmd/dashboard/controller/member_api.go
+++ b/cmd/dashboard/controller/member_api.go
@@ -73,6 +73,7 @@ func (ma *memberAPI) delete(c *gin.Context) {
 	case "monitor":
 		err = dao.DB.Delete(&model.Monitor{}, "id = ?", id).Error
 		if err == nil {
+			dao.ServiceSentinelShared.OnMonitorDelete(id)
 			err = dao.DB.Delete(&model.MonitorHistory{}, "monitor_id = ?", id).Error
 		}
 	case "cron":
@@ -194,6 +195,7 @@ type monitorForm struct {
 	Name   string
 	Target string
 	Type   uint8
+	Notify string
 }
 
 func (ma *memberAPI) addOrEditMonitor(c *gin.Context) {
@@ -205,6 +207,7 @@ func (ma *memberAPI) addOrEditMonitor(c *gin.Context) {
 		m.Target = mf.Target
 		m.Type = mf.Type
 		m.ID = mf.ID
+		m.Notify = mf.Notify == "on"
 	}
 	if err == nil {
 		if m.ID == 0 {
@@ -219,6 +222,8 @@ func (ma *memberAPI) addOrEditMonitor(c *gin.Context) {
 			Message: fmt.Sprintf("请求错误：%s", err),
 		})
 		return
+	} else {
+		dao.ServiceSentinelShared.OnMonitorUpdate()
 	}
 	c.JSON(http.StatusOK, model.Response{
 		Code: http.StatusOK,
diff --git a/cmd/dashboard/controller/member_page.go b/cmd/dashboard/controller/member_page.go
index 4e2e04e..577a43c 100644
--- a/cmd/dashboard/controller/member_page.go
+++ b/cmd/dashboard/controller/member_page.go
@@ -39,11 +39,9 @@ func (mp *memberPage) server(c *gin.Context) {
 }
 
 func (mp *memberPage) monitor(c *gin.Context) {
-	var monitors []model.Monitor
-	dao.DB.Find(&monitors)
 	c.HTML(http.StatusOK, "dashboard/monitor", mygin.CommonEnvironment(c, gin.H{
 		"Title":    "服务监控",
-		"Monitors": monitors,
+		"Monitors": dao.ServiceSentinelShared.Monitors(),
 	}))
 }
 
diff --git a/cmd/dashboard/main.go b/cmd/dashboard/main.go
index 934ccbf..df70e3b 100644
--- a/cmd/dashboard/main.go
+++ b/cmd/dashboard/main.go
@@ -52,6 +52,7 @@ func initSystem() {
 	dao.DB.AutoMigrate(model.Server{}, model.User{},
 		model.Notification{}, model.AlertRule{}, model.Monitor{},
 		model.MonitorHistory{}, model.Cron{})
+	dao.NewServiceSentinel()
 
 	loadServers() //加载服务器列表
 	loadCrons()   //加载计划任务
diff --git a/cmd/dashboard/rpc/rpc.go b/cmd/dashboard/rpc/rpc.go
index 2aaf9fb..c95ff38 100644
--- a/cmd/dashboard/rpc/rpc.go
+++ b/cmd/dashboard/rpc/rpc.go
@@ -7,7 +7,6 @@ import (
 
 	"google.golang.org/grpc"
 
-	"github.com/naiba/nezha/model"
 	pb "github.com/naiba/nezha/proto"
 	"github.com/naiba/nezha/service/dao"
 	rpcService "github.com/naiba/nezha/service/rpc"
@@ -28,9 +27,8 @@ func ServeRPC(port uint) {
 func DispatchTask(duration time.Duration) {
 	var index uint64 = 0
 	for {
-		var tasks []model.Monitor
 		var hasAliveAgent bool
-		dao.DB.Find(&tasks)
+		tasks := dao.ServiceSentinelShared.Monitors()
 		dao.SortedServerLock.RLock()
 		startedAt := time.Now()
 		for i := 0; i < len(tasks); i++ {
diff --git a/cmd/playground/main.go b/cmd/playground/main.go
index 2baeaaa..cecfcdb 100644
--- a/cmd/playground/main.go
+++ b/cmd/playground/main.go
@@ -53,7 +53,6 @@ func sysinfo() {
 	for model, count := range cpuModelCount {
 		cpus = append(cpus, fmt.Sprintf("%s %d %s Core", model, count, cpuType))
 	}
-	log.Println(cpus)
 	os.Exit(0)
 	// 硬盘信息，不使用的原因是会重复统计 Linux、Mac
 	dparts, _ := disk.Partitions(false)
diff --git a/go.mod b/go.mod
index 7c175f4..8dbe4f4 100644
--- a/go.mod
+++ b/go.mod
@@ -26,5 +26,5 @@ require (
 	google.golang.org/protobuf v1.25.0
 	gopkg.in/yaml.v2 v2.2.8
 	gorm.io/driver/sqlite v1.1.4
-	gorm.io/gorm v1.20.8
+	gorm.io/gorm v1.21.8
 )
diff --git a/go.sum b/go.sum
index 19cfe08..cdafd3d 100644
--- a/go.sum
+++ b/go.sum
@@ -63,7 +63,6 @@ github.com/coreos/etcd v3.3.13+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc
 github.com/coreos/go-semver v0.3.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
 github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
 github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f/go.mod h1:E3G3o1h8I7cfcXa63jLwjI0eiQQMgzzUDFVpN/nH/eA=
-github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
@@ -74,7 +73,6 @@ github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.m
 github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
 github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
 github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4=
-github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV9I=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
 github.com/fsnotify/fsnotify v1.4.9 h1:hsms1Qyu0jgnwNXIxa+/V/PDsU6CfLf6CNO8H7IWoS4=
 github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
@@ -106,7 +104,6 @@ github.com/go-playground/validator/v10 v10.2.0/go.mod h1:uOYAAleCW8F/7oMFd6aG0GO
 github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY=
 github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
 github.com/gogo/protobuf v1.2.1/go.mod h1:hp+jE20tsWTFYpLwKvXlhS1hjn+gTNwPg2I6zVXpSg4=
-github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b h1:VKtxabqXZkF25pY9ekfRL6a582T4P37/31XEstQ5p58=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
 github.com/golang/groupcache v0.0.0-20190129154638-5b532d6fd5ef/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
 github.com/golang/groupcache v0.0.0-20190702054246-869f871628b6/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
@@ -121,7 +118,6 @@ github.com/golang/mock v1.4.3/go.mod h1:UOMv5ysSaYNkG+OFQykRIcU/QvvxJf3p21QfJ2Bt
 github.com/golang/mock v1.4.4/go.mod h1:l3mdAwkq5BuhzHwde/uurv3sEJeZMXNpwsxVWU71h+4=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
-github.com/golang/protobuf v1.3.2 h1:6nsPYzhq5kReh6QImI3k5qWzO4PEbvbIW2cwSfR/6xs=
 github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.3.3/go.mod h1:vzj43D7+SQXF/4pzW/hwtAqwc6iTitCiVSaWz5lYuqw=
 github.com/golang/protobuf v1.3.4/go.mod h1:vzj43D7+SQXF/4pzW/hwtAqwc6iTitCiVSaWz5lYuqw=
@@ -131,19 +127,16 @@ github.com/golang/protobuf v1.4.0-rc.1.0.20200221234624-67d41d38c208/go.mod h1:x
 github.com/golang/protobuf v1.4.0-rc.2/go.mod h1:LlEzMj4AhA7rCAGe4KMBDvJI+AwstrUpVNzEA03Pprs=
 github.com/golang/protobuf v1.4.0-rc.4.0.20200313231945-b860323f09d0/go.mod h1:WU3c8KckQ9AFe+yFwt9sWVRKCVIyN9cPHBJSNnbL67w=
 github.com/golang/protobuf v1.4.0/go.mod h1:jodUvKwWbYaEsadDk5Fwe5c77LiNKVO9IDvqG2KuDX0=
-github.com/golang/protobuf v1.4.1 h1:ZFgWrT+bLgsYPirOnRfKLYJLvssAegOj/hgyMFdJZe0=
 github.com/golang/protobuf v1.4.1/go.mod h1:U8fpvMrcmy5pZrNK1lt4xCsGvpyWQ/VVv6QDs8UjoX8=
 github.com/golang/protobuf v1.4.2 h1:+Z5KGCizgyZCbGh1KZqA0fcLLkwbsjIzS4aV2v7wJX0=
 github.com/golang/protobuf v1.4.2/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
 github.com/google/btree v0.0.0-20180813153112-4030bb1f1f0c/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
 github.com/google/btree v1.0.0/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
-github.com/google/go-cmp v0.2.0 h1:+dTQ8DZQJz0Mb/HjFlkptS1FeQ4cWSnN941F8aEG4SQ=
 github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
 github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
 github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
 github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.4.1/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
-github.com/google/go-cmp v0.5.0 h1:/QaMHBdZ26BB3SSst0Iwl10Epc+xhTquomWX0oZEB6w=
 github.com/google/go-cmp v0.5.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.1 h1:JFrFEBb2xKufg6XkJsJr+WbKb4FQlURi5RUcBveYu9k=
 github.com/google/go-cmp v0.5.1/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
@@ -200,8 +193,9 @@ github.com/inconshreveable/go-update v0.0.0-20160112193335-8152e7eb6ccf h1:WfD7V
 github.com/inconshreveable/go-update v0.0.0-20160112193335-8152e7eb6ccf/go.mod h1:hyb9oH7vZsitZCiBt0ZvifOrB+qc8PS5IiilCIb87rg=
 github.com/jinzhu/inflection v1.0.0 h1:K317FqzuhWc8YvSVlFMCCUb36O/S9MCKRDI7QkRKD/E=
 github.com/jinzhu/inflection v1.0.0/go.mod h1:h+uFLlag+Qp1Va5pdKtLDYj+kHp5pxUVkryuEj+Srlc=
-github.com/jinzhu/now v1.1.1 h1:g39TucaRWyV3dwDO++eEc6qf8TVIQ/Da48WmqjZ3i7E=
 github.com/jinzhu/now v1.1.1/go.mod h1:d3SSVoowX0Lcu0IBviAWJpolVfI5UJVZZ7cO71lE/z8=
+github.com/jinzhu/now v1.1.2 h1:eVKgfIdy9b6zbWBMgFpfDPoAMifwSZagU9HmEU6zgiI=
+github.com/jinzhu/now v1.1.2/go.mod h1:d3SSVoowX0Lcu0IBviAWJpolVfI5UJVZZ7cO71lE/z8=
 github.com/jonboulle/clockwork v0.1.0/go.mod h1:Ii8DK3G1RaLaWxj9trq07+26W01tbo22gdxWY5EU2bo=
 github.com/json-iterator/go v1.1.6/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCVDaaPEHmU=
 github.com/json-iterator/go v1.1.9 h1:9yzud/Ht36ygwatGx56VwCZtlI/2AD15T1X2sjSuGns=
@@ -305,7 +299,6 @@ github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+
 github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
-github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
 github.com/stretchr/testify v1.6.1 h1:hDPOHmpOpP40lSULcqw7IrRb/u7w6RpDC9399XyoNd0=
 github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
@@ -380,7 +373,6 @@ golang.org/x/net v0.0.0-20181201002055-351d144fa1fc/go.mod h1:mL1N/T3taQHkDXs73r
 golang.org/x/net v0.0.0-20181220203305-927f97764cc3/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20190108225652-1e06a53dbb7e/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20190213061140-3a22650c66bd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
-golang.org/x/net v0.0.0-20190311183353-d8887717615a h1:oWX7TPOiFAMXLq8o0ikBYfCJVlRHBcsciT5bXOrH628=
 golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190501004415-9ce7a6920f09/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
@@ -395,7 +387,6 @@ golang.org/x/net v0.0.0-20200202094626-16171245cfb2/go.mod h1:z5CRVTTTmAJ677TzLL
 golang.org/x/net v0.0.0-20200222125558-5a598a2470a0/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20200226121028-0de0cce0169b/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20200301022130-244492dfa37a/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/net v0.0.0-20200324143707-d3edc9973b7e h1:3G+cUijn7XD+S4eJFddp53Pv7+slrESplyjG25HgL+k=
 golang.org/x/net v0.0.0-20200324143707-d3edc9973b7e/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
 golang.org/x/net v0.0.0-20200501053045-e0ff5e5a1de5/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
 golang.org/x/net v0.0.0-20200506145744-7e3656a0809f/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
@@ -403,14 +394,12 @@ golang.org/x/net v0.0.0-20200513185701-a91f0712d120/go.mod h1:qpuaurCH72eLCgpAm/
 golang.org/x/net v0.0.0-20200520182314-0ba52f642ac2/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
 golang.org/x/net v0.0.0-20200625001655-4c5254603344/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
 golang.org/x/net v0.0.0-20200707034311-ab3426394381/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
-golang.org/x/net v0.0.0-20200822124328-c89045814202 h1:VvcQYSHwXgi7W+TpUR6A9g6Up98WAHf3f/ulnJ62IyA=
 golang.org/x/net v0.0.0-20200822124328-c89045814202/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
 golang.org/x/net v0.0.0-20200904194848-62affa334b73 h1:MXfv8rhZWmFeqX3GNZRsd6vOLoaCHjYEX3qkRo3YBUA=
 golang.org/x/net v0.0.0-20200904194848-62affa334b73/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/oauth2 v0.0.0-20181106182150-f42d05182288/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
-golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45 h1:SVwTIAaPC2U/AvvLNZ2a7OVsmBpC8L5BlwK1whH3hm0=
 golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/oauth2 v0.0.0-20191202225959-858c2ad4c8b6/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/oauth2 v0.0.0-20200107190931-bf48bf16ab8d/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
@@ -445,31 +434,25 @@ golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20191204072324-ce4227a45e2e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191228213918-04cbcbbfeed8/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200113162924-86b910548bc1/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200116001909-b77594299b42 h1:vEOn+mP2zCOVzKckCZy6YsCtDblrpj/w7B9nxGNELpg=
 golang.org/x/sys v0.0.0-20200116001909-b77594299b42/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200122134326-e047566fdf82/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200202164722-d101bd2416d5/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200212091648-12a6c2dcc1e4/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200223170610-d5e6a3e2c0ae/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200302150141-5c8b2ff67527/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd h1:xhmwyvizuTgC2qz7ZlMluP20uW+C3Rm0FD/WLDX8884=
 golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200331124033-c3d80250170d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200501052902-10377860bb8e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200511232937-7e40ca221e25/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200515095857-1151b9dac4a9/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200523222454-059865788121/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200803210538-64077c9b5642 h1:B6caxRw+hozq68X2MY7jEpZh/cr4/aHLv9xU8Kkadrw=
 golang.org/x/sys v0.0.0-20200803210538-64077c9b5642/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201024232916-9f70ab9862d5 h1:iCaAy5bMeEvwANu3YnJfWwI0kWAGkEa2RXPdweI/ysk=
 golang.org/x/sys v0.0.0-20201024232916-9f70ab9862d5/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-golang.org/x/text v0.3.2 h1:tW2bmiBqwgJj/UpqtC8EpXEZVYOwU0yG4iWbprSVAcs=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
-golang.org/x/text v0.3.3 h1:cokOdA+Jmi5PJGXLlLllQSgYigAEfHXJAERHVMaCc2k=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.5 h1:i6eZZ+zk0SOf0xgBpEpPD18qWcJda6q1sxt3S0kzyUQ=
 golang.org/x/text v0.3.5/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
@@ -521,7 +504,6 @@ golang.org/x/tools v0.0.0-20200804011535-6c149bb5ef0d/go.mod h1:njjCfa9FT2d7l9Bc
 golang.org/x/tools v0.0.0-20200825202427-b303f430e36d/go.mod h1:njjCfa9FT2d7l9Bc6FUM5FLjQPp3cFF28FI3qnDFljA=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
@@ -543,10 +525,8 @@ google.golang.org/api v0.29.0/go.mod h1:Lcubydp8VUV7KeIHD9z2Bys/sm/vGKnG1UHuDBSr
 google.golang.org/api v0.30.0/go.mod h1:QGmEvQ87FHZNiUVJkT14jQNYJ4ZJjdRF23ZXz5138Fc=
 google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
 google.golang.org/appengine v1.3.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
-google.golang.org/appengine v1.4.0 h1:/wp5JvzpHIxhs/dumFmF7BXTf3Z+dd4uXta4kVyO508=
 google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
 google.golang.org/appengine v1.5.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
-google.golang.org/appengine v1.6.1 h1:QzqyMA1tlu6CgqCDUtU9V+ZKhLFT2dkJuANu5QaxI3I=
 google.golang.org/appengine v1.6.1/go.mod h1:i06prIuMbXzDqacNJfV5OdTW448YApPu5ww/cMBSeb0=
 google.golang.org/appengine v1.6.5/go.mod h1:8WjMMxjGQR8xUklV/ARdw2HLXBOI7O7uCIDZVag1xfc=
 google.golang.org/appengine v1.6.6 h1:lMO5rYAqUxkmaj76jAkRUvt5JZgFymx/+Q5Mzfivuhc=
@@ -557,7 +537,6 @@ google.golang.org/genproto v0.0.0-20190418145605-e7d98fc518a7/go.mod h1:VzzqZJRn
 google.golang.org/genproto v0.0.0-20190425155659-357c62f0e4bb/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
 google.golang.org/genproto v0.0.0-20190502173448-54afdca5d873/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
 google.golang.org/genproto v0.0.0-20190801165951-fa694d86fc64/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
-google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55 h1:gSJIx1SDwno+2ElGhA4+qG2zF97qiUzTM+rQ0klBOcE=
 google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
 google.golang.org/genproto v0.0.0-20190911173649-1774047e7e51/go.mod h1:IbNlFCBrqXvoKpeg0TB2l7cyZUmoaFKYIwrEpbDKLA8=
 google.golang.org/genproto v0.0.0-20191108220845-16a3f7862a1a/go.mod h1:n3cpQtvxv34hfy77yVDNjmbRyujviMdxYliBSkLhpCc=
@@ -576,7 +555,6 @@ google.golang.org/genproto v0.0.0-20200331122359-1ee6d9798940/go.mod h1:55QSHmfG
 google.golang.org/genproto v0.0.0-20200430143042-b979b6f78d84/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
 google.golang.org/genproto v0.0.0-20200511104702-f5ebc3bea380/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
 google.golang.org/genproto v0.0.0-20200515170657-fc4c6c6a6587/go.mod h1:YsZOwe1myG/8QRHRsmBRE1LrgQY60beZKjly0O1fX9U=
-google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013 h1:+kGHl1aib/qcwaRi1CbqBZ1rk19r85MNUf8HaBghugY=
 google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013/go.mod h1:NbSheEEYHJ7i3ixzK3sjbqSGDJWnxyFXZblF3eUsNvo=
 google.golang.org/genproto v0.0.0-20200618031413-b414f8b61790/go.mod h1:jDfRM7FcilCzHH/e9qn6dsT145K34l5v+OpcnNgKAAA=
 google.golang.org/genproto v0.0.0-20200729003335-053ba62fc06f/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
@@ -589,7 +567,6 @@ google.golang.org/grpc v1.21.1/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ij
 google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
 google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQciAY=
 google.golang.org/grpc v1.26.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
-google.golang.org/grpc v1.27.0 h1:rRYRFMVgRv6E0D70Skyfsr28tDXIuuPZyWGMPdMcnXg=
 google.golang.org/grpc v1.27.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
 google.golang.org/grpc v1.27.1/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
 google.golang.org/grpc v1.28.0/go.mod h1:rpkK4SK4GF4Ach/+MFLZUBavHOvF2JJB5uozKKal+60=
@@ -610,7 +587,6 @@ google.golang.org/protobuf v1.24.0/go.mod h1:r/3tXBNzIEhYS9I1OUVjXDlt8tc493IdKGj
 google.golang.org/protobuf v1.25.0 h1:Ejskq+SyPohKW+1uil0JJMtmHCgJPJ/qWTxr8qp+R4c=
 google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
-gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
@@ -624,9 +600,7 @@ gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkep
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
 gopkg.in/yaml.v2 v2.0.0-20170812160011-eb3733d160e7/go.mod h1:JAlM8MvJe8wmxCU4Bli9HhUf9+ttbYbLASfIpnQbh74=
 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.2.4 h1:/eiJrUcujPVeJ3xlSWaiNi3uSVmDGBK1pDHUHAnao1I=
 gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.8 h1:obN1ZagJSUGI0Ek/LBmuj4SNLPfIny3KsKFopxRdj10=
 gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
@@ -635,8 +609,8 @@ gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C
 gorm.io/driver/sqlite v1.1.4 h1:PDzwYE+sI6De2+mxAneV9Xs11+ZyKV6oxD3wDGkaNvM=
 gorm.io/driver/sqlite v1.1.4/go.mod h1:mJCeTFr7+crvS+TRnWc5Z3UvwxUN1BGBLMrf5LA9DYw=
 gorm.io/gorm v1.20.7/go.mod h1:0HFTzE/SqkGTzK6TlDPPQbAYCluiVvhzoA1+aVyzenw=
-gorm.io/gorm v1.20.8 h1:iToaOdZgjNvlc44NFkxfLa3U9q63qwaxt0FdNCiwOMs=
-gorm.io/gorm v1.20.8/go.mod h1:0HFTzE/SqkGTzK6TlDPPQbAYCluiVvhzoA1+aVyzenw=
+gorm.io/gorm v1.21.8 h1:2CEwZSzogdhsKPlJ9OvBKTdlWIpELXb6HbfLfMNhSYI=
+gorm.io/gorm v1.21.8/go.mod h1:F+OptMscr0P2F2qU97WT1WimdH9GaQPoDW7AYd5i2Y0=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190418001031-e561f6794a2a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
diff --git a/model/api.go b/model/api.go
new file mode 100644
index 0000000..039429c
--- /dev/null
+++ b/model/api.go
@@ -0,0 +1,12 @@
+package model
+
+type ServiceItemResponse struct {
+	Monitor     Monitor
+	TotalUp     uint64
+	TotalDown   uint64
+	CurrentUp   uint64
+	CurrentDown uint64
+	Delay       *[30]float32
+	Up          *[30]int
+	Down        *[30]int
+}
diff --git a/model/monitor.go b/model/monitor.go
index 7b56253..819d155 100644
--- a/model/monitor.go
+++ b/model/monitor.go
@@ -17,6 +17,7 @@ type Monitor struct {
 	Name   string
 	Type   uint8
 	Target string
+	Notify bool
 }
 
 func (m *Monitor) PB() *pb.Task {
diff --git a/resource/static/main.js b/resource/static/main.js
index 8f93b3f..47ce0f1 100644
--- a/resource/static/main.js
+++ b/resource/static/main.js
@@ -139,6 +139,11 @@ function addOrEditMonitor(monitor) {
     modal.find('input[name=Name]').val(monitor ? monitor.Name : null)
     modal.find('input[name=Target]').val(monitor ? monitor.Target : null)
     modal.find('select[name=Type]').val(monitor ? monitor.Type : 1)
+    if (monitor && monitor.Notify) {
+      modal.find(".ui.nb-notify.checkbox").checkbox("set checked");
+    } else {
+      modal.find(".ui.nb-notify.checkbox").checkbox("set unchecked");
+    }
     showFormModal('.monitor.modal', '#monitorForm', '/api/monitor')
 }
 
diff --git a/resource/template/common/footer.html b/resource/template/common/footer.html
index e84a4a8..3c5a4ef 100644
--- a/resource/template/common/footer.html
+++ b/resource/template/common/footer.html
@@ -9,7 +9,7 @@
 <script src="https://cdn.jsdelivr.net/npm/semantic-ui@2.4.1/dist/semantic.min.js"></script>
 <script src="/static/semantic-ui-alerts.min.js"></script>
 <script src="https://cdn.jsdelivr.net/npm/vue@2.6.12/dist/vue.min.js"></script>
-<script src="/static/main.js?v202101240939"></script>
+<script src="/static/main.js?v202104172324"></script>
 </body>
 
 </html>
diff --git a/resource/template/component/monitor.html b/resource/template/component/monitor.html
index 11b222e..8e24319 100644
--- a/resource/template/component/monitor.html
+++ b/resource/template/component/monitor.html
@@ -1,38 +1,50 @@
 {{define "component/monitor"}}
 <div class="ui tiny monitor modal transition hidden">
-    <div class="header">添加监控</div>
-    <div class="content">
-        <form id="monitorForm" class="ui form">
-            <input type="hidden" name="ID">
-            <div class="field">
-                <label>名称</label>
-                <input type="text" name="Name" placeholder="博客">
-            </div>
-            <div class="field">
-                <label>目标</label>
-                <input type="text" name="Target" placeholder="HTTP(https://t.tt)｜Ping(t.tt)｜TCP(t.tt:80)">
-            </div>
-            <div class="field">
-                <label>类型</label>
-                <select name="Type" class="ui fluid dropdown">
-                    <option value="1">HTTP-GET(SSL到期、变更)</option>
-                    <option value="2">ICMP-Ping</option>
-                    <option value="3">TCP-Ping</option>
-                </select>
-            </div>
-        </form>
-        <div class="ui warning message">
-            <p>
-                类型为 <b>HTTP-GET</b> 时输入URL(带 http/https, HTTPS 协议的会顺带监控SSL证书)；<br>
-                类型为 <b>ICMP-Ping</b> 时输入主机名/IP，不带端口；<br>
-                类型为 <b>TCP-Ping</b> 时输入主机名/IP + 端口号：example.com:22
-            </p>
+  <div class="header">添加监控</div>
+  <div class="content">
+    <form id="monitorForm" class="ui form">
+      <input type="hidden" name="ID" />
+      <div class="field">
+        <label>名称</label>
+        <input type="text" name="Name" placeholder="博客" />
+      </div>
+      <div class="field">
+        <label>目标</label>
+        <input
+          type="text"
+          name="Target"
+          placeholder="HTTP(https://t.tt)｜Ping(t.tt)｜TCP(t.tt:80)"
+        />
+      </div>
+      <div class="field">
+        <label>类型</label>
+        <select name="Type" class="ui fluid dropdown">
+          <option value="1">HTTP-GET(SSL到期、变更)</option>
+          <option value="2">ICMP-Ping</option>
+          <option value="3">TCP-Ping</option>
+        </select>
+      </div>
+      <div class="field">
+        <div class="ui nb-notify checkbox">
+          <input name="Notify" type="checkbox" tabindex="0" class="hidden" />
+          <label>启用故障通知</label>
         </div>
+      </div>
+    </form>
+    <div class="ui warning message">
+      <p>
+        类型为 <b>HTTP-GET</b> 时输入URL(带 http/https, HTTPS
+        协议的会顺带监控SSL证书)；<br />
+        类型为 <b>ICMP-Ping</b> 时输入主机名/IP，不带端口；<br />
+        类型为 <b>TCP-Ping</b> 时输入主机名/IP + 端口号：example.com:22
+      </p>
     </div>
-    <div class=" actions">
-        <div class="ui negative button">取消</div>
-        <button class="ui positive right labeled icon button">确认<i class="checkmark icon"></i>
-        </button>
-    </div>
+  </div>
+  <div class="actions">
+    <div class="ui negative button">取消</div>
+    <button class="ui positive right labeled icon button">
+      确认<i class="checkmark icon"></i>
+    </button>
+  </div>
 </div>
-{{end}}
\ No newline at end of file
+{{end}}
diff --git a/resource/template/dashboard/monitor.html b/resource/template/dashboard/monitor.html
index c70401b..a4c5377 100644
--- a/resource/template/dashboard/monitor.html
+++ b/resource/template/dashboard/monitor.html
@@ -53,4 +53,7 @@
 </div>
 {{template "component/monitor"}}
 {{template "common/footer" .}}
+<script>
+    $('.checkbox').checkbox()
+</script>
 {{end}}
\ No newline at end of file
diff --git a/service/dao/dao.go b/service/dao/dao.go
index a68d2b1..5b73a34 100644
--- a/service/dao/dao.go
+++ b/service/dao/dao.go
@@ -13,7 +13,7 @@ import (
 	pb "github.com/naiba/nezha/proto"
 )
 
-var Version = "v0.4.15" // ！！记得修改 README 重的 badge 版本！！
+var Version = "v0.5.0" // ！！记得修改 README 重的 badge 版本！！
 
 const (
 	SnapshotDelay = 3
diff --git a/service/dao/servicesentinel.go b/service/dao/servicesentinel.go
new file mode 100644
index 0000000..3cad4bc
--- /dev/null
+++ b/service/dao/servicesentinel.go
@@ -0,0 +1,255 @@
+package dao
+
+import (
+	"fmt"
+	"log"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/naiba/nezha/model"
+	pb "github.com/naiba/nezha/proto"
+)
+
+var ServiceSentinelShared *ServiceSentinel
+
+func NewServiceSentinel() {
+	ServiceSentinelShared = &ServiceSentinel{
+		serviceResponseChannel:              make(chan *pb.TaskResult, 200),
+		serviceResponseDataStoreToday:       make(map[uint64][]model.MonitorHistory),
+		lastStatus:                          make(map[uint64]string),
+		serviceResponseDataStoreCurrentUp:   make(map[uint64]uint64),
+		serviceResponseDataStoreCurrentDown: make(map[uint64]uint64),
+		monitors:                            make(map[uint64]model.Monitor),
+		latestDate:                          time.Now().Format("02-Jan-06"),
+	}
+	ServiceSentinelShared.OnMonitorUpdate()
+	go ServiceSentinelShared.worker()
+}
+
+/*
+   使用缓存 channel，处理上报的 Service 请求结果，然后判断是否需要报警
+   需要记录上一次的状态信息
+*/
+type ServiceSentinel struct {
+	latestDate                              string
+	serviceResponseDataStoreTodaySavedIndex int
+	serviceResponseDataStoreTodayLastSave   time.Time
+	serviceResponseDataStoreLock            sync.RWMutex
+	monitorsLock                            sync.RWMutex
+	serviceResponseChannel                  chan *pb.TaskResult
+	lastStatus                              map[uint64]string
+	monitors                                map[uint64]model.Monitor
+	serviceResponseDataStoreToday           map[uint64][]model.MonitorHistory
+	serviceResponseDataStoreCurrentUp       map[uint64]uint64
+	serviceResponseDataStoreCurrentDown     map[uint64]uint64
+}
+
+func (ss *ServiceSentinel) Dispatch(r *pb.TaskResult) {
+	ss.serviceResponseChannel <- r
+}
+
+func (ss *ServiceSentinel) Monitors() []model.Monitor {
+	ss.monitorsLock.RLock()
+	defer ss.monitorsLock.RUnlock()
+	var monitors []model.Monitor
+	for _, v := range ss.monitors {
+		monitors = append(monitors, v)
+	}
+	return monitors
+}
+
+func (ss *ServiceSentinel) OnMonitorUpdate() {
+	var monitors []model.Monitor
+	DB.Find(&monitors)
+	ss.monitorsLock.Lock()
+	defer ss.monitorsLock.Unlock()
+	ss.monitors = make(map[uint64]model.Monitor)
+	for i := 0; i < len(monitors); i++ {
+		ss.monitors[monitors[i].ID] = monitors[i]
+	}
+}
+
+func (ss *ServiceSentinel) OnMonitorDelete(id uint64) {
+	ss.serviceResponseDataStoreLock.Lock()
+	defer ss.serviceResponseDataStoreLock.Unlock()
+	delete(ss.serviceResponseDataStoreCurrentDown, id)
+	delete(ss.serviceResponseDataStoreCurrentUp, id)
+	delete(ss.serviceResponseDataStoreToday, id)
+	delete(ss.lastStatus, id)
+	ss.monitorsLock.Lock()
+	defer ss.monitorsLock.Unlock()
+	delete(ss.monitors, id)
+}
+
+func (ss *ServiceSentinel) LoadStats() map[uint64]*model.ServiceItemResponse {
+	var cached bool
+	var msm map[uint64]*model.ServiceItemResponse
+	data, has := Cache.Get(model.CacheKeyServicePage)
+	if has {
+		msm = data.(map[uint64]*model.ServiceItemResponse)
+		cached = true
+	}
+	if !cached {
+		msm = make(map[uint64]*model.ServiceItemResponse)
+		var ms []model.Monitor
+		DB.Find(&ms)
+		year, month, day := time.Now().Date()
+		today := time.Date(year, month, day, 0, 0, 0, 0, time.Local)
+		var mhs []model.MonitorHistory
+		DB.Where("created_at >= ? AND created_at < ?", today.AddDate(0, 0, -29), today).Find(&mhs)
+		for i := 0; i < len(ms); i++ {
+			msm[ms[i].ID] = &model.ServiceItemResponse{
+				Monitor: ms[i],
+				Delay:   &[30]float32{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
+				Up:      &[30]int{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
+				Down:    &[30]int{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
+			}
+		}
+		// 整合数据
+		for i := 0; i < len(mhs); i++ {
+			dayIndex := 28 - (int(today.Sub(mhs[i].CreatedAt).Hours()) / 24)
+			if mhs[i].Successful {
+				msm[mhs[i].MonitorID].TotalUp++
+				msm[mhs[i].MonitorID].Delay[dayIndex] = (msm[mhs[i].MonitorID].Delay[dayIndex]*float32(msm[mhs[i].MonitorID].Up[dayIndex]) + mhs[i].Delay) / float32(msm[mhs[i].MonitorID].Up[dayIndex]+1)
+				msm[mhs[i].MonitorID].Up[dayIndex]++
+			} else {
+				msm[mhs[i].MonitorID].TotalDown++
+				msm[mhs[i].MonitorID].Down[dayIndex]++
+			}
+		}
+		// 缓存一天
+		Cache.Set(model.CacheKeyServicePage, msm, time.Until(time.Date(year, month, day, 23, 59, 59, 999, today.Location())))
+	}
+	// 最新一天的数据
+	ss.serviceResponseDataStoreLock.RLock()
+	defer ss.serviceResponseDataStoreLock.RUnlock()
+	for k, v := range ss.serviceResponseDataStoreToday {
+		if msm[k] == nil {
+			msm[k] = &model.ServiceItemResponse{}
+		}
+		msm[k].Monitor = ss.monitors[k]
+		for i := 0; i < len(v); i++ {
+			if v[i].Successful {
+				msm[k].Up[29]++
+			} else {
+				msm[k].Down[29]++
+			}
+			msm[k].Delay[29] = (msm[k].Delay[29]*float32(msm[k].Up[29]) + v[i].Delay) / float32(msm[k].Up[29]+1)
+		}
+	}
+	// 最后20分钟的状态 与 monitor 对象填充
+	for k, v := range ss.serviceResponseDataStoreCurrentDown {
+		msm[k].CurrentDown = v
+	}
+	for k, v := range ss.serviceResponseDataStoreCurrentUp {
+		msm[k].CurrentUp = v
+	}
+	return msm
+}
+
+func getStateStr(percent uint64) string {
+	if percent == 0 {
+		return "无数据"
+	}
+	if percent > 95 {
+		return "良好"
+	}
+	if percent > 80 {
+		return "低可用"
+	}
+	return "故障"
+}
+
+func (ss *ServiceSentinel) worker() {
+	for r := range ss.serviceResponseChannel {
+		mh := model.PB2MonitorHistory(r)
+		ss.serviceResponseDataStoreLock.Lock()
+		// 先查看是否到下一天
+		nowDate := time.Now().Format("02-Jan-06")
+		if nowDate != ss.latestDate {
+			ss.latestDate = nowDate
+			dataToSave := ss.serviceResponseDataStoreToday[mh.MonitorID][ss.serviceResponseDataStoreTodaySavedIndex:]
+			if err := DB.Create(&dataToSave).Error; err != nil {
+				log.Println(err)
+			}
+			ss.serviceResponseDataStoreTodaySavedIndex = 0
+			ss.serviceResponseDataStoreToday[mh.MonitorID] = []model.MonitorHistory{}
+			ss.serviceResponseDataStoreCurrentDown[mh.MonitorID] = 0
+			ss.serviceResponseDataStoreCurrentUp[mh.MonitorID] = 0
+			ss.serviceResponseDataStoreTodayLastSave = time.Now()
+		}
+		// 储存至当日数据
+		ss.serviceResponseDataStoreToday[mh.MonitorID] = append(ss.serviceResponseDataStoreToday[mh.MonitorID], mh)
+		// 每20分钟入库一次
+		if time.Now().After(ss.serviceResponseDataStoreTodayLastSave.Add(time.Minute * 20)) {
+			ss.serviceResponseDataStoreTodayLastSave = time.Now()
+			dataToSave := ss.serviceResponseDataStoreToday[mh.MonitorID][ss.serviceResponseDataStoreTodaySavedIndex:]
+			if err := DB.Create(&dataToSave).Error; err != nil {
+				log.Println(err)
+			}
+			ss.serviceResponseDataStoreTodaySavedIndex = len(ss.serviceResponseDataStoreToday[mh.MonitorID])
+		}
+		// 更新当前状态
+		ss.serviceResponseDataStoreCurrentUp[mh.MonitorID] = 0
+		ss.serviceResponseDataStoreCurrentDown[mh.MonitorID] = 0
+		for i := len(ss.serviceResponseDataStoreToday[mh.MonitorID]) - 1; i >= 0 && i >= len(ss.serviceResponseDataStoreToday[mh.MonitorID])-20; i-- {
+			if ss.serviceResponseDataStoreToday[mh.MonitorID][i].Successful {
+				ss.serviceResponseDataStoreCurrentUp[mh.MonitorID]++
+			} else {
+				ss.serviceResponseDataStoreCurrentDown[mh.MonitorID]++
+			}
+		}
+		stateStr := getStateStr(ss.serviceResponseDataStoreCurrentUp[mh.MonitorID] * 100 / (ss.serviceResponseDataStoreCurrentDown[mh.MonitorID] + ss.serviceResponseDataStoreCurrentUp[mh.MonitorID]))
+		if stateStr == "故障" || stateStr != ss.lastStatus[mh.MonitorID] {
+			ss.monitorsLock.RLock()
+			isSendNotification := (ss.lastStatus[mh.MonitorID] != "" || stateStr == "故障") && ss.monitors[mh.MonitorID].Notify
+			ss.lastStatus[mh.MonitorID] = stateStr
+			if isSendNotification {
+				SendNotification(fmt.Sprintf("服务监控：%s 服务状态：%s", ss.monitors[mh.MonitorID].Name, stateStr), true)
+			}
+			ss.monitorsLock.RUnlock()
+		}
+		ss.serviceResponseDataStoreLock.Unlock()
+		// SSL 证书报警
+		var errMsg string
+		if strings.HasPrefix(r.GetData(), "SSL证书错误：") {
+			// 排除 i/o timeont、connection timeout、EOF 错误
+			if !strings.HasSuffix(r.GetData(), "timeout") &&
+				!strings.HasSuffix(r.GetData(), "EOF") &&
+				!strings.HasSuffix(r.GetData(), "timed out") {
+				errMsg = r.GetData()
+			}
+		} else {
+			var last model.MonitorHistory
+			var newCert = strings.Split(r.GetData(), "|")
+			if len(newCert) > 1 {
+				expiresNew, _ := time.Parse("2006-01-02 15:04:05 -0700 MST", newCert[1])
+				// 证书过期提醒
+				if expiresNew.Before(time.Now().AddDate(0, 0, 7)) {
+					errMsg = fmt.Sprintf(
+						"SSL证书将在七天内过期，过期时间：%s。",
+						expiresNew.Format("2006-01-02 15:04:05"))
+				}
+				// 证书变更提醒
+				if err := DB.Where("monitor_id = ? AND data LIKE ?", r.GetId(), "%|%").Order("id DESC").First(&last).Error; err == nil {
+					var oldCert = strings.Split(last.Data, "|")
+					var expiresOld time.Time
+					if len(oldCert) > 1 {
+						expiresOld, _ = time.Parse("2006-01-02 15:04:05 -0700 MST", oldCert[1])
+					}
+					if last.Data != "" && oldCert[0] != newCert[0] && !expiresNew.Equal(expiresOld) {
+						errMsg = fmt.Sprintf(
+							"SSL证书变更，旧：%s, %s 过期；新：%s, %s 过期。",
+							oldCert[0], expiresOld.Format("2006-01-02 15:04:05"), newCert[0], expiresNew.Format("2006-01-02 15:04:05"))
+					}
+				}
+			}
+		}
+		if errMsg != "" {
+			ss.monitorsLock.RLock()
+			SendNotification(fmt.Sprintf("服务监控：%s %s", ss.monitors[mh.MonitorID].Name, errMsg), true)
+			ss.monitorsLock.RUnlock()
+		}
+	}
+}
diff --git a/service/rpc/nezha.go b/service/rpc/nezha.go
index 6539f9b..a44991e 100644
--- a/service/rpc/nezha.go
+++ b/service/rpc/nezha.go
@@ -3,8 +3,6 @@ package rpc
 import (
 	"context"
 	"fmt"
-	"log"
-	"strings"
 	"time"
 
 	"github.com/naiba/nezha/model"
@@ -22,49 +20,9 @@ func (s *NezhaHandler) ReportTask(c context.Context, r *pb.TaskResult) (*pb.Rece
 	if clientID, err = s.Auth.Check(c); err != nil {
 		return nil, err
 	}
-	if r.GetType() == model.TaskTypeHTTPGET {
-		// SSL 证书报警
-		var errMsg string
-		if strings.HasPrefix(r.GetData(), "SSL证书错误：") {
-			// 排除 i/o timeont、connection timeout、EOF 错误
-			if !strings.HasSuffix(r.GetData(), "timeout") &&
-				!strings.HasSuffix(r.GetData(), "EOF") &&
-				!strings.HasSuffix(r.GetData(), "timed out") {
-				errMsg = r.GetData()
-			}
-		} else {
-			var last model.MonitorHistory
-			var newCert = strings.Split(r.GetData(), "|")
-			if len(newCert) > 1 {
-				expiresNew, _ := time.Parse("2006-01-02 15:04:05 -0700 MST", newCert[1])
-				// 证书过期提醒
-				if expiresNew.Before(time.Now().AddDate(0, 0, 7)) {
-					errMsg = fmt.Sprintf(
-						"SSL证书将在七天内过期，过期时间：%s。",
-						expiresNew.Format("2006-01-02 15:04:05"))
-				}
-				// 证书变更提醒
-				if err := dao.DB.Where("monitor_id = ? AND data LIKE ?", r.GetId(), "%|%").Order("id DESC").First(&last).Error; err == nil {
-					var oldCert = strings.Split(last.Data, "|")
-					var expiresOld time.Time
-					if len(oldCert) > 1 {
-						expiresOld, _ = time.Parse("2006-01-02 15:04:05 -0700 MST", oldCert[1])
-					}
-					if last.Data != "" && oldCert[0] != newCert[0] && !expiresNew.Equal(expiresOld) {
-						errMsg = fmt.Sprintf(
-							"SSL证书变更，旧：%s, %s 过期；新：%s, %s 过期。",
-							oldCert[0], expiresOld.Format("2006-01-02 15:04:05"), newCert[0], expiresNew.Format("2006-01-02 15:04:05"))
-					}
-				}
-			}
-		}
-		if errMsg != "" {
-			var monitor model.Monitor
-			dao.DB.First(&monitor, "id = ?", r.GetId())
-			dao.SendNotification(fmt.Sprintf("服务监控：%s %s", monitor.Name, errMsg), true)
-		}
-	}
-	if r.GetType() == model.TaskTypeCommand {
+	if r.GetType() != model.TaskTypeCommand {
+		dao.ServiceSentinelShared.Dispatch(r)
+	} else {
 		// 处理上报的计划任务
 		dao.CronLock.RLock()
 		defer dao.CronLock.RUnlock()
@@ -81,12 +39,6 @@ func (s *NezhaHandler) ReportTask(c context.Context, r *pb.TaskResult) (*pb.Rece
 				LastResult:     r.GetSuccessful(),
 			})
 		}
-	} else {
-		// 存入历史记录
-		mh := model.PB2MonitorHistory(r)
-		if err := dao.DB.Create(&mh).Error; err != nil {
-			return nil, err
-		}
 	}
 	return &pb.Receipt{Proced: true}, nil
 }
@@ -102,10 +54,7 @@ func (s *NezhaHandler) RequestTask(h *pb.Host, stream pb.NezhaService_RequestTas
 	dao.ServerList[clientID].TaskStream = stream
 	dao.ServerList[clientID].TaskClose = closeCh
 	dao.ServerLock.RUnlock()
-	select {
-	case err = <-closeCh:
-		return err
-	}
+	return <-closeCh
 }
 
 func (s *NezhaHandler) ReportSystemState(c context.Context, r *pb.State) (*pb.Receipt, error) {
@@ -131,7 +80,6 @@ func (s *NezhaHandler) ReportSystemInfo(c context.Context, r *pb.Host) (*pb.Rece
 	host := model.PB2Host(r)
 	dao.ServerLock.RLock()
 	defer dao.ServerLock.RUnlock()
-	log.Println(dao.Conf.IgnoredIPNotificationServerIDs)
 	if dao.Conf.EnableIPChangeNotification &&
 		dao.Conf.IgnoredIPNotificationServerIDs[clientID] != struct{}{} &&
 		dao.ServerList[clientID].Host != nil &&