diff --git a/collect.go b/collect.go
index 5b35971..5e1f7e2 100644
--- a/collect.go
+++ b/collect.go
@@ -7,16 +7,17 @@ import (
 	"time"
 
 	"git.nonolive.co/eson.hsm/databoard-collect/database"
+	"github.com/go-sql-driver/mysql"
 	"go.mongodb.org/mongo-driver/bson"
 	"go.mongodb.org/mongo-driver/mongo"
 )
 
 // collectCopyCountLiveAnchors 从mongodb里复制需要增量的值
 func collectCopyCountLiveAnchors(cxt *WorkerContext) {
-	defer cxt.Done()
 
 	var err error
 	var ok bool
+	var lastLiveAnchor *CountLiveAnchors
 	for !ps.IsClose() {
 
 		liveanchor := &CountLiveAnchors{}
@@ -32,8 +33,17 @@ func collectCopyCountLiveAnchors(cxt *WorkerContext) {
 				}
 				cur, err = mdb.C.CountLiveAnchors.Find(context.TODO(), bson.M{"create_at": bson.M{"$gt": last}})
 			} else {
+
+				if lastLiveAnchor != nil {
+					if liveanchor.UID == liveanchor.UID {
+						ps.Wait(time.Second * 2)
+						continue
+					}
+				}
+
 				last = liveanchor.CreateAt
-				log.Println("last: ", last)
+				log.Println("last: ", last, liveanchor.UID)
+				lastLiveAnchor = liveanchor
 				cur, err = mdb.C.CountLiveAnchors.Find(context.TODO(), bson.M{"create_at": bson.M{"$gt": last}})
 			}
 
@@ -43,8 +53,9 @@ func collectCopyCountLiveAnchors(cxt *WorkerContext) {
 				continue
 			}
 
+			var isNoData bool
 			for cur.Next(context.TODO()) && !ps.IsClose() {
-				// la := &database.LiveAnchorsCountPoint{}
+
 				la := &database.LiveAnchorsCountPointObjectID{}
 				err = cur.Decode(la)
 				if err != nil {
@@ -63,10 +74,18 @@ func collectCopyCountLiveAnchors(cxt *WorkerContext) {
 				c.CountMap = string(data)
 				_, err = db.T.CountLiveAnchors.Insert(c)
 				if err != nil {
-					log.Println(err)
-					ps.Wait(time.Second * 2)
+					switch err.(*mysql.MySQLError).Number {
+					case 1062: // duplicate
+						isNoData = true
+					default:
+						log.Println(err.(*mysql.MySQLError).Number, err)
+					}
 				}
 			}
+
+			if isNoData {
+				ps.Wait(time.Second * 2)
+			}
 		}
 	}
 }
diff --git a/go.mod b/go.mod
index d031f49..0e51b4a 100644
--- a/go.mod
+++ b/go.mod
@@ -7,6 +7,5 @@ require (
 	github.com/474420502/perfectshutdown v0.1.0
 	github.com/go-sql-driver/mysql v1.5.0
 	github.com/go-xorm/xorm v0.7.9
-	github.com/google/uuid v1.1.2
 	go.mongodb.org/mongo-driver v1.4.3
 )
diff --git a/worker.go b/worker.go
index d3f24e2..6dbdc0a 100644
--- a/worker.go
+++ b/worker.go
@@ -10,11 +10,6 @@ type WorkerContext struct {
 	wg *sync.WaitGroup
 }
 
-// Done 必须在Handler里结束时处理. 默认defer cxt.Done()
-func (cxt *WorkerContext) Done() {
-	cxt.wg.Done()
-}
-
 // Worker 主进程
 type Worker struct {
 	cxt *WorkerContext
@@ -30,7 +25,10 @@ var worker = func() *Worker {
 // Handler 处理方法
 func (w *Worker) Handler(handleFunc func(cxt *WorkerContext)) {
 	w.cxt.wg.Add(1)
-	go handleFunc(w.cxt)
+	go func() {
+		defer w.cxt.wg.Done()
+		handleFunc(w.cxt)
+	}()
 }
 
 // Run 运行