diff --git a/internal/proxy/meta_cache.go b/internal/proxy/meta_cache.go
index 3f582baf40dd7..445fa0a04773f 100644
--- a/internal/proxy/meta_cache.go
+++ b/internal/proxy/meta_cache.go
@@ -929,6 +929,7 @@ func (m *MetaCache) DeprecateShardCache(database, collectionName string) {
 }
 
 func (m *MetaCache) expireShardLeaderCache(ctx context.Context) {
+	log := log.Ctx(ctx).WithRateGroup("proxy.expireShardLeaderCache", 1, 60)
 	go func() {
 		ticker := time.NewTicker(params.Params.ProxyCfg.ShardLeaderCacheInterval.GetAsDuration(time.Second))
 		defer ticker.Stop()
@@ -941,7 +942,7 @@ func (m *MetaCache) expireShardLeaderCache(ctx context.Context) {
 			case <-ticker.C:
 				m.mu.RLock()
 				for database, db := range m.collInfo {
-					log.Info("expire all shard leader cache",
+					log.RatedInfo(10, "expire all shard leader cache",
 						zap.String("database", database),
 						zap.Strings("collections", lo.Keys(db)))
 					for _, info := range db {
diff --git a/internal/querycoordv2/observers/collection_observer.go b/internal/querycoordv2/observers/collection_observer.go
index 6e95245bbf146..d12a51332694c 100644
--- a/internal/querycoordv2/observers/collection_observer.go
+++ b/internal/querycoordv2/observers/collection_observer.go
@@ -171,7 +171,7 @@ func (ob *CollectionObserver) observeLoadStatus(ctx context.Context) {
 }
 
 func (ob *CollectionObserver) observePartitionLoadStatus(ctx context.Context, partition *meta.Partition, replicaNum int32) {
-	log := log.With(
+	log := log.Ctx(ctx).WithRateGroup("qcv2.observePartitionLoadStatus", 1, 60).With(
 		zap.Int64("collectionID", partition.GetCollectionID()),
 		zap.Int64("partitionID", partition.GetPartitionID()),
 	)
@@ -185,7 +185,7 @@ func (ob *CollectionObserver) observePartitionLoadStatus(ctx context.Context, pa
 		return
 	}
 
-	log.Info("partition targets",
+	log.RatedInfo(10, "partition targets",
 		zap.Int("segmentTargetNum", len(segmentTargets)),
 		zap.Int("channelTargetNum", len(channelTargets)),
 		zap.Int("totalTargetNum", targetNum),
diff --git a/pkg/config/etcd_source.go b/pkg/config/etcd_source.go
index 353c731eda5cf..4bc1856cd6f52 100644
--- a/pkg/config/etcd_source.go
+++ b/pkg/config/etcd_source.go
@@ -132,13 +132,14 @@ func (es *EtcdSource) UpdateOptions(opts Options) {
 }
 
 func (es *EtcdSource) refreshConfigurations() error {
+	log := log.Ctx(context.TODO()).WithRateGroup("config.etcdSource", 1, 60)
 	es.RLock()
 	prefix := path.Join(es.keyPrefix, "config")
 	es.RUnlock()
 
 	ctx, cancel := context.WithTimeout(es.ctx, ReadConfigTimeout)
 	defer cancel()
-	log.Debug("etcd refreshConfigurations", zap.String("prefix", prefix), zap.Any("endpoints", es.etcdCli.Endpoints()))
+	log.RatedDebug(10, "etcd refreshConfigurations", zap.String("prefix", prefix), zap.Any("endpoints", es.etcdCli.Endpoints()))
 	response, err := es.etcdCli.Get(ctx, prefix, clientv3.WithPrefix(), clientv3.WithSerializable())
 	if err != nil {
 		return err