diff --git a/server/datasource/etcd/kv/kv_cache.go b/server/datasource/etcd/kv/kv_cache.go
index 61d017b..7cf6529 100644
--- a/server/datasource/etcd/kv/kv_cache.go
+++ b/server/datasource/etcd/kv/kv_cache.go
@@ -9,15 +9,16 @@
 	"sync"
 	"time"
 
-	"github.com/apache/servicecomb-kie/pkg/model"
-	"github.com/apache/servicecomb-kie/pkg/stringutil"
-	"github.com/apache/servicecomb-kie/server/datasource"
-	"github.com/apache/servicecomb-kie/server/datasource/etcd/key"
 	"github.com/go-chassis/foundation/backoff"
 	"github.com/go-chassis/openlog"
 	"github.com/little-cui/etcdadpt"
 	goCache "github.com/patrickmn/go-cache"
 	"go.etcd.io/etcd/api/v3/mvccpb"
+
+	"github.com/apache/servicecomb-kie/pkg/model"
+	"github.com/apache/servicecomb-kie/pkg/stringutil"
+	"github.com/apache/servicecomb-kie/server/datasource"
+	"github.com/apache/servicecomb-kie/server/datasource/etcd/key"
 )
 
 func Init() {
@@ -35,8 +36,6 @@
 	backOffMinInterval   = 5 * time.Second
 )
 
-type IDSet map[string]struct{}
-
 type Cache struct {
 	timeOut    time.Duration
 	client     etcdadpt.Client
@@ -158,11 +157,13 @@
 		cacheKey := kc.GetCacheKey(kvDoc.Domain, kvDoc.Project, kvDoc.Labels)
 		m, ok := kc.LoadKvIDSet(cacheKey)
 		if !ok {
-			kc.StoreKvIDSet(cacheKey, IDSet{kvDoc.ID: struct{}{}})
+			z := &sync.Map{}
+			z.Store(kvDoc.ID, struct{}{})
+			kc.StoreKvIDSet(cacheKey, z)
 			openlog.Info("cacheKey " + cacheKey + "not exists")
 			continue
 		}
-		m[kvDoc.ID] = struct{}{}
+		m.Store(kvDoc.ID, struct{}{})
 	}
 }
 
@@ -180,23 +181,23 @@
 			openlog.Error("cacheKey " + cacheKey + "not exists")
 			continue
 		}
-		delete(m, kvDoc.ID)
+		m.Delete(kvDoc.ID)
 	}
 }
 
-func (kc *Cache) LoadKvIDSet(cacheKey string) (IDSet, bool) {
+func (kc *Cache) LoadKvIDSet(cacheKey string) (*sync.Map, bool) {
 	val, ok := kc.kvIDCache.Load(cacheKey)
 	if !ok {
 		return nil, false
 	}
-	kvIds, ok := val.(IDSet)
+	kvIds, ok := val.(*sync.Map)
 	if !ok {
 		return nil, false
 	}
 	return kvIds, true
 }
 
-func (kc *Cache) StoreKvIDSet(cacheKey string, kvIds IDSet) {
+func (kc *Cache) StoreKvIDSet(cacheKey string, kvIds *sync.Map) {
 	kc.kvIDCache.Store(cacheKey, kvIds)
 }
 
@@ -220,9 +221,9 @@
 	kc.kvDocCache.Delete(kvID)
 }
 
-func Search(ctx context.Context, req *CacheSearchReq) (*model.KVResponse, bool) {
+func Search(ctx context.Context, req *CacheSearchReq) (*model.KVResponse, bool, error) {
 	if !req.Opts.ExactLabels {
-		return nil, false
+		return nil, false, nil
 	}
 
 	openlog.Debug(fmt.Sprintf("using cache to search kv, domain %v, project %v, opts %+v", req.Domain, req.Project, *req.Opts))
@@ -232,22 +233,25 @@
 	cacheKey := kvCache.GetCacheKey(req.Domain, req.Project, req.Opts.Labels)
 	kvIds, ok := kvCache.LoadKvIDSet(cacheKey)
 	if !ok {
-		kvCache.StoreKvIDSet(cacheKey, IDSet{})
-		return result, true
+		kvCache.StoreKvIDSet(cacheKey, &sync.Map{})
+		return result, true, nil
 	}
 
 	var docs []*model.KVDoc
 
 	var kvIdsLeft []string
-	for kvID := range kvIds {
-		if doc, ok := kvCache.LoadKvDoc(kvID); ok {
+	kvIds.Range(func(kvID, value any) bool {
+		if doc, ok := kvCache.LoadKvDoc(kvID.(string)); ok {
 			docs = append(docs, doc)
-			continue
+		} else {
+			kvIdsLeft = append(kvIdsLeft, kvID.(string))
 		}
-		kvIdsLeft = append(kvIdsLeft, kvID)
+		return true
+	})
+	tpData, err := kvCache.getKvFromEtcd(ctx, req, kvIdsLeft)
+	if err != nil {
+		return nil, true, err
 	}
-
-	tpData := kvCache.getKvFromEtcd(ctx, req, kvIdsLeft)
 	docs = append(docs, tpData...)
 
 	for _, doc := range docs {
@@ -257,17 +261,18 @@
 		}
 	}
 	result.Total = len(result.Data)
-	return result, true
+	return result, true, nil
 }
 
-func (kc *Cache) getKvFromEtcd(ctx context.Context, req *CacheSearchReq, kvIdsLeft []string) []*model.KVDoc {
+func (kc *Cache) getKvFromEtcd(ctx context.Context, req *CacheSearchReq, kvIdsLeft []string) ([]*model.KVDoc, error) {
 	if len(kvIdsLeft) == 0 {
-		return nil
+		return nil, nil
 	}
 
 	openlog.Debug("get kv from etcd by kvId")
 	wg := sync.WaitGroup{}
 	docs := make([]*model.KVDoc, len(kvIdsLeft))
+	var getKvErr error
 	for i, kvID := range kvIdsLeft {
 		wg.Add(1)
 		go func(kvID string, cnt int) {
@@ -277,12 +282,14 @@
 			kv, err := etcdadpt.Get(ctx, docKey)
 			if err != nil {
 				openlog.Error(fmt.Sprintf("failed to get kv from etcd, err %v", err))
+				getKvErr = err
 				return
 			}
 
 			doc, err := kc.GetKvDoc(kv)
 			if err != nil {
 				openlog.Error(fmt.Sprintf("failed to unmarshal kv, err %v", err))
+				getKvErr = err
 				return
 			}
 
@@ -291,7 +298,10 @@
 		}(kvID, i)
 	}
 	wg.Wait()
-	return docs
+	if getKvErr != nil {
+		return nil, getKvErr
+	}
+	return docs, nil
 }
 
 func isMatch(req *CacheSearchReq, doc *model.KVDoc) bool {
diff --git a/server/datasource/etcd/kv/kv_dao.go b/server/datasource/etcd/kv/kv_dao.go
index 2332b58..d7260df 100644
--- a/server/datasource/etcd/kv/kv_dao.go
+++ b/server/datasource/etcd/kv/kv_dao.go
@@ -524,15 +524,18 @@
 	}
 
 	if Enabled() {
-		result, useCache := Search(ctx, &CacheSearchReq{
+		result, useCache, err := Search(ctx, &CacheSearchReq{
 			Domain:  domain,
 			Project: project,
 			Opts:    &opts,
 			Regex:   regex,
 		})
-		if useCache {
+		if useCache && err == nil {
 			return result, opts, nil
 		}
+		if useCache && err != nil {
+			openlog.Error("using cache to search kv failed: " + err.Error())
+		}
 	}
 
 	result, err := matchLabelsSearch(ctx, domain, project, regex, opts)