diff --git a/src/backend/booster/server/pkg/api/v1/dcc/distcc.go b/src/backend/booster/server/pkg/api/v1/dcc/distcc.go
index 29a7ee325..70caa1e1a 100644
--- a/src/backend/booster/server/pkg/api/v1/dcc/distcc.go
+++ b/src/backend/booster/server/pkg/api/v1/dcc/distcc.go
@@ -73,7 +73,11 @@ func ApplyResource(req *restful.Request, resp *restful.Response) {
 		Extra:         string(extraData),
 	})
 	if err != nil {
-		blog.Errorf("apply resource: create task failed, url(%s): %v", req.Request.URL.String(), err)
+		if err == engine.ErrorProjectNoFound {
+			blog.Warnf("apply resource: create task failed, url(%s): %v", req.Request.URL.String(), err)
+		} else {
+			blog.Errorf("apply resource: create task failed, url(%s): %v", req.Request.URL.String(), err)
+		}
 		api.ReturnRest(&api.RestResponse{Resp: resp, ErrCode: api.ServerErrApplyResourceFailed, Message: err.Error()})
 		return
 	}
diff --git a/src/backend/booster/server/pkg/api/v2/handler.go b/src/backend/booster/server/pkg/api/v2/handler.go
index 9d7c53639..d7d8ffa6c 100644
--- a/src/backend/booster/server/pkg/api/v2/handler.go
+++ b/src/backend/booster/server/pkg/api/v2/handler.go
@@ -40,7 +40,11 @@ func ApplyResource(req *restful.Request, resp *restful.Response) {
 
 	tb, err := defaultManager.CreateTask(param)
 	if err != nil {
-		blog.Errorf("apply resource: create task failed, url(%s): %v", req.Request.URL.String(), err)
+		if err == engine.ErrorProjectNoFound {
+			blog.Warnf("apply resource: create task failed, url(%s): %v", req.Request.URL.String(), err)
+		} else {
+			blog.Errorf("apply resource: create task failed, url(%s): %v", req.Request.URL.String(), err)
+		}
 		api.ReturnRest(&api.RestResponse{Resp: resp, ErrCode: api.ServerErrApplyResourceFailed, Message: err.Error()})
 		return
 	}
@@ -89,7 +93,7 @@ func SendMessage(req *restful.Request, resp *restful.Response) {
 			return
 		}
 		if data, err = defaultManager.SendProjectMessage(param.ProjectID, []byte(param.Extra)); err != nil {
-			blog.Errorf("send message: send project(%s) message to engine failed, url(%s) message(%s): %v",
+			blog.Warnf("send message: send project(%s) message to engine failed, url(%s) message(%s): %v",
 				param.ProjectID, req.Request.URL.String(), param.Extra, err)
 			api.ReturnRest(&api.RestResponse{Resp: resp, ErrCode: api.ServerErrSendMessageFailed, Message: err.Error()})
 			return
diff --git a/src/backend/booster/server/pkg/manager/normal/layer.go b/src/backend/booster/server/pkg/manager/normal/layer.go
index 9b7489d27..3aa89cd88 100644
--- a/src/backend/booster/server/pkg/manager/normal/layer.go
+++ b/src/backend/booster/server/pkg/manager/normal/layer.go
@@ -44,8 +44,14 @@ type TaskBasicLayer interface {
 	// list task basic from cache, return a new pointer
 	ListTaskBasic(released bool, statusList ...engine.TaskStatusType) ([]*engine.TaskBasic, error)
 
-	// init task basic, create task basic table in database
-	InitTaskBasic(tb *engine.TaskBasic) error
+	// create task basic, create task basic table in database
+	CreateTaskBasic(tb *engine.TaskBasic) error
+
+	//insert task basic to cache first time
+	InsertTB(tb *engine.TaskBasic) error
+
+	//delete task basic from cache
+	DeleteTB(tb *engine.TaskBasic)
 
 	// update task basic, both database and cache, just update the field implements in task basic
 	UpdateTaskBasic(tb *engine.TaskBasic) error
@@ -237,9 +243,23 @@ func (tc *taskBasicLayer) ListTaskBasic(
 	return rl, nil
 }
 
-// InitTaskBasic init a task basic into layer cache and databases.
-func (tc *taskBasicLayer) InitTaskBasic(tb *engine.TaskBasic) error {
-	return tc.updateTaskBasic(tb, true)
+// CreateTaskBasic create a task basic in databases.
+func (tc *taskBasicLayer) CreateTaskBasic(tb *engine.TaskBasic) error {
+	egn, err := tc.GetEngineByTypeName(tb.Client.EngineName)
+	if err != nil {
+		blog.Errorf("layer: try updating task basic(%s), get engine(%s) failed: %v", tb.ID, tb.Client.EngineName, err)
+		return err
+	}
+	err = engine.CreateTaskBasic(egn, tb)
+
+	if err != nil {
+		blog.Errorf("layer: update task basic(%s) via engine(%s) failed: %v", tb.ID, tb.Client.EngineName, err)
+		return err
+
+	}
+	blog.Infof("layer: success to init task basic(%s) in status(%s) with engine(%s) and queue(%s)",
+		tb.ID, tb.Status.Status, tb.Client.EngineName, tb.Client.QueueName)
+	return nil
 }
 
 // UpdateTaskBasic update a existing task basic into layer cache and databases.
@@ -337,11 +357,43 @@ func (tc *taskBasicLayer) updateTaskBasic(tbRaw *engine.TaskBasic, new bool) err
 	return nil
 }
 
+// InsertTB create a new record of init task in cache, do not need to create in queue
+func (tc *taskBasicLayer) InsertTB(tbRaw *engine.TaskBasic) error {
+	tb := engine.CopyTaskBasic(tbRaw)
+	blog.Infof("layer: going to insertTB(%s) status(%s) to cache", tb.ID, tb.Status.Status)
+	tc.tbmLock.Lock()
+	defer tc.tbmLock.Unlock()
+	if tb.Status.Status != engine.TaskStatusInit {
+		return fmt.Errorf("taskId %s is not init status,can not insert into cache", tb.ID)
+	}
+	if _, ok := tc.tbm[tb.ID]; ok {
+		return fmt.Errorf("taskId %s already exist in cache", tb.ID)
+	}
+	selfMetric.TaskNumController.Inc(
+		tb.Client.EngineName.String(), tb.Client.QueueName, string(tb.Status.Status), "")
+	tc.tbm[tb.ID] = tb
+	return nil
+}
+
+// DeleteTB delete task from cache and queue if task exsited
+func (tc *taskBasicLayer) DeleteTB(tb *engine.TaskBasic) {
+	blog.Infof("layer: going to deleteTB(%s) status(%s) from cache and queue", tb.ID, tb.Status.Status)
+	tc.tbmLock.Lock()
+	defer tc.tbmLock.Unlock()
+
+	if oldTask, ok := tc.tbm[tb.ID]; ok {
+		selfMetric.TaskNumController.Dec(
+			tb.Client.EngineName.String(), oldTask.Client.QueueName, string(oldTask.Status.Status), "")
+	}
+	tc.deleteTBFromQueue(tb)
+	delete(tc.tbm, tb.ID)
+}
+
 func (tc *taskBasicLayer) putTB(tb *engine.TaskBasic) {
 	tc.tbmLock.Lock()
 	defer tc.tbmLock.Unlock()
 
-	blog.Debugf("layer: get lock and going to putTB(%s) to cache and queue", tb.ID)
+	blog.Debugf("layer: get lock and going to putTB(%s) status(%s) to cache and queue", tb.ID, tb.Status.Status)
 
 	// update metric data of task num
 	// decrease last status num and add current status num, if the status is same as last one, then do nothing
diff --git a/src/backend/booster/server/pkg/manager/normal/manager.go b/src/backend/booster/server/pkg/manager/normal/manager.go
index a96d76542..9c1edfe4b 100644
--- a/src/backend/booster/server/pkg/manager/normal/manager.go
+++ b/src/backend/booster/server/pkg/manager/normal/manager.go
@@ -311,7 +311,7 @@ func (m *manager) createTask(param *mgr.TaskCreateParam) (*engine.TaskBasic, err
 
 	pb, egn, err := m.getBasicProject(param.ProjectID)
 	if err != nil {
-		blog.Errorf("manager: try creating task, get project(%s) failed: %v", param.ProjectID, err)
+		blog.Warnf("manager: try creating task, get project(%s) failed: %v", param.ProjectID, err)
 		return nil, err
 	}
 
@@ -332,11 +332,11 @@ func (m *manager) createTask(param *mgr.TaskCreateParam) (*engine.TaskBasic, err
 
 	// lock project when creating task for controlling concurrency
 	m.layer.LockProject(param.ProjectID)
-	defer m.layer.UnLockProject(param.ProjectID)
 
 	if err = m.invalidConcurrency(pb); err != nil {
 		blog.Errorf("manager: try creating task, check concurrency for project(%s) in engine(%s) failed: %v",
 			param.ProjectID, pb.EngineName.String(), err)
+		m.layer.UnLockProject(param.ProjectID)
 		return nil, err
 	}
 
@@ -344,6 +344,7 @@ func (m *manager) createTask(param *mgr.TaskCreateParam) (*engine.TaskBasic, err
 	if err != nil {
 		blog.Errorf("manager: try creating task, generate taskID for project(%s) in engine(%s) failed: %v",
 			param.ProjectID, pb.EngineName.String(), err)
+		m.layer.UnLockProject(param.ProjectID)
 		return nil, err
 	}
 
@@ -379,14 +380,36 @@ func (m *manager) createTask(param *mgr.TaskCreateParam) (*engine.TaskBasic, err
 	}
 	if err = tb.Check(); err != nil {
 		blog.Errorf("manager: create task basic(%s) check failed: %v", taskID, err)
+		m.layer.UnLockProject(param.ProjectID)
 		return nil, err
 	}
 	tb.Status.Init()
 	tb.Status.Message = messageTaskInit
+	//creat task to cache, if task exsited, return error
+	if err = m.layer.InsertTB(tb); err != nil {
+		blog.Errorf("manager: create task basic(%s) insert db failed: %v", taskID, err)
+		m.layer.UnLockProject(param.ProjectID)
+		return nil, err
+	}
+	m.layer.UnLockProject(param.ProjectID)
+
+	ok, err = engine.CheckTaskIDValid(egn, taskID)
+	if !ok {
+		if err == nil {
+			err = fmt.Errorf("task %s is already exsit in db", taskID)
+		}
+		blog.Errorf("manager: check task valid(%s) for project(%s) in engine(%s) failed: %v",
+			taskID, param.ProjectID, pb.EngineName.String(), err)
+		//check task id failed, now task not in db, delete task from cache directly
+		m.layer.DeleteTB(tb)
+		return nil, err
+	}
 
-	if err = m.layer.InitTaskBasic(tb); err != nil {
+	if err = m.layer.CreateTaskBasic(tb); err != nil {
 		blog.Errorf("manager: create task basic(%s) for project(%s) in engine(%s) failed: %v",
 			taskID, param.ProjectID, pb.EngineName.String(), err)
+		//insert task to db failed, delete task from cache directly
+		m.layer.DeleteTB(tb)
 		return nil, err
 	}
 	if err = egn.CreateTaskExtension(tb, []byte(param.Extra)); err != nil {
@@ -417,7 +440,7 @@ func (m *manager) sendProjectMessage(projectID string, data []byte) ([]byte, err
 
 	_, egn, err := m.getBasicProject(projectID)
 	if err != nil {
-		blog.Errorf("manager: try sending project message, get project(%s) failed: %v", projectID, err)
+		blog.Warnf("manager: try sending project message, get project(%s) failed: %v", projectID, err)
 		return nil, err
 	}
 
@@ -535,7 +558,7 @@ func (m *manager) getBasicProject(projectID string) (*engine.ProjectBasic, engin
 		return pb, egn, nil
 	}
 
-	blog.Errorf("manager: get project(%s) no found", projectID)
+	blog.Warnf("manager: get project(%s) no found", projectID)
 	return nil, nil, engine.ErrorProjectNoFound
 }
 
@@ -619,20 +642,7 @@ func (m *manager) invalidConcurrency(pb *engine.ProjectBasic) error {
 }
 
 func (m *manager) generateTaskID(egn engine.Engine, projectID string) (string, error) {
-	for i := 0; i < 3; i++ {
-		taskID := generateTaskID(egn.Name().String(), projectID)
-
-		ok, err := engine.CheckTaskIDValid(egn, taskID)
-		if err != nil {
-			return "", err
-		}
-
-		if ok {
-			return taskID, nil
-		}
-	}
-
-	return "", types.ErrorGenerateTaskIDFailed
+	return generateTaskID(egn.Name().String(), projectID), nil
 }
 
 func generateTaskID(egnName string, projectID string) string {
diff --git a/src/backend/booster/server/pkg/manager/normal/types.go b/src/backend/booster/server/pkg/manager/normal/types.go
index 2f9fe5173..ba28269cf 100644
--- a/src/backend/booster/server/pkg/manager/normal/types.go
+++ b/src/backend/booster/server/pkg/manager/normal/types.go
@@ -30,7 +30,7 @@ const (
 	trackerCheckGapTime = 1 * time.Second
 	trackerTrackGapTime = 1 * time.Second
 
-	keeperHealthCheckGapTime  = 10 * time.Second
+	keeperHealthCheckGapTime  = 5 * time.Second
 	keeperFirstStartGraceTime = 1 * time.Minute
 	keeperInitTimeout         = 20 * time.Second
 	keeperStartingTimeout     = 120 * time.Second