diff --git a/memory_scope/models/__init__.py b/memory_scope/models/__init__.py
index 5a9d5579..8b137891 100644
--- a/memory_scope/models/__init__.py
+++ b/memory_scope/models/__init__.py
@@ -1,3 +1 @@
-from memory_scope.utils.registry import Registry
 
-MODEL_REGISTRY = Registry("models")
diff --git a/memory_scope/models/base_model.py b/memory_scope/models/base_model.py
index 28b12fe5..038cde81 100644
--- a/memory_scope/models/base_model.py
+++ b/memory_scope/models/base_model.py
@@ -3,11 +3,13 @@ import time
 from abc import abstractmethod, ABCMeta
 
 from memory_scope.enumeration.model_enum import ModelEnum
-from memory_scope.models import MODEL_REGISTRY
-from memory_scope.models.response import ModelResponse, ModelResponseGen
+from memory_scope.models.model_response import ModelResponse, ModelResponseGen
 from memory_scope.utils.logger import Logger
+from memory_scope.utils.registry import Registry
 from memory_scope.utils.timer import Timer
 
+MODEL_REGISTRY = Registry("models")
+
 
 class BaseModel(metaclass=ABCMeta):
     m_type: ModelEnum | None = None
@@ -70,8 +72,8 @@ class BaseModel(metaclass=ABCMeta):
         :param kwargs:
         :return:
         """
-        self.before_call(stream=stream, **kwargs)
         with Timer(self.__class__.__name__, log_time=False) as t:
+            self.before_call(stream=stream, **kwargs)
             for i in range(self.max_retries):
                 try:
                     model_response = self._call(stream=stream, **kwargs)
@@ -97,8 +99,8 @@ class BaseModel(metaclass=ABCMeta):
         :param kwargs:
         :return:
         """
-        self.before_call(**kwargs)
         with Timer(self.__class__.__name__, log_time=False) as t:
+            self.before_call(**kwargs)
             for i in range(self.max_retries):
                 try:
                     model_response = await self._async_call(**kwargs)
diff --git a/memory_scope/models/llama_index_embedding_model.py b/memory_scope/models/llama_index_embedding_model.py
index a9397116..bb4d35b4 100644
--- a/memory_scope/models/llama_index_embedding_model.py
+++ b/memory_scope/models/llama_index_embedding_model.py
@@ -2,20 +2,15 @@ from typing import List
 
 from llama_index.embeddings.dashscope import DashScopeEmbedding
 
-from memory_scope.models import MODEL_REGISTRY
-from memory_scope.models.base_model import BaseModel
-from memory_scope.models.response import ModelResponse, ModelResponseGen
 from memory_scope.enumeration.model_enum import ModelEnum
+from memory_scope.models.base_model import BaseModel, MODEL_REGISTRY
+from memory_scope.models.model_response import ModelResponse
 
 
 class LlamaIndexEmbeddingModel(BaseModel):
     m_type: ModelEnum = ModelEnum.EMBEDDING_MODEL
 
-    MODEL_REGISTRY.batch_register(
-        [
-            DashScopeEmbedding,
-        ]
-    )
+    MODEL_REGISTRY.register("dashscope_embedding", DashScopeEmbedding)
 
     def before_call(self, **kwargs):
         text: str | List[str] = kwargs.pop("text", "")
@@ -42,16 +37,11 @@ class LlamaIndexEmbeddingModel(BaseModel):
         :param kwargs:
         :return:
         """
-        return ModelResponse(
-            m_type=self.m_type, raw=self.model.get_text_embedding_batch(**self.data)
-        )
+        return ModelResponse(m_type=self.m_type, raw=self.model.get_text_embedding_batch(**self.data))
 
     async def _async_call(self, **kwargs) -> ModelResponse:
         """
         :param kwargs:
         :return:
         """
-        return ModelResponse(
-            m_type=self.m_type,
-            raw=await self.model.aget_text_embedding_batch(**self.data),
-        )
+        return ModelResponse(m_type=self.m_type, raw=await self.model.aget_text_embedding_batch(**self.data))
diff --git a/memory_scope/models/llama_index_generation_model.py b/memory_scope/models/llama_index_generation_model.py
index e2662c12..56f0b88b 100644
--- a/memory_scope/models/llama_index_generation_model.py
+++ b/memory_scope/models/llama_index_generation_model.py
@@ -1,24 +1,17 @@
 from typing import List, Dict
-from llama_index.core.base.llms.types import (
-    ChatMessage,
-    ChatResponse,
-    CompletionResponse,
-)
+
+from llama_index.core.base.llms.types import ChatMessage, ChatResponse, CompletionResponse
 from llama_index.llms.dashscope import DashScope
 
-from enumeration.model_enum import ModelEnum
-from . import MODEL_REGISTRY
-from .base_model import BaseModel
-from .response import ModelResponse, ModelResponseGen
+from memory_scope.enumeration.model_enum import ModelEnum
+from memory_scope.models.base_model import BaseModel, MODEL_REGISTRY
+from memory_scope.models.model_response import ModelResponse, ModelResponseGen
 
 
 class LlamaIndexGenerationModel(BaseModel):
     m_type: ModelEnum = ModelEnum.GENERATION_MODEL
 
-    # TODO rename module name at xianzhe
-    MODEL_REGISTRY.batch_register([
-        DashScope,
-    ])
+    MODEL_REGISTRY.register("dashscope_generation", DashScope)
 
     def before_call(self, **kwargs) -> None:
         prompt: str = kwargs.pop("prompt", "")
diff --git a/memory_scope/models/llama_index_rerank_model.py b/memory_scope/models/llama_index_rerank_model.py
index 144a3b69..1a19e6aa 100644
--- a/memory_scope/models/llama_index_rerank_model.py
+++ b/memory_scope/models/llama_index_rerank_model.py
@@ -4,19 +4,15 @@ from llama_index.core.data_structs import Node
 from llama_index.core.schema import NodeWithScore
 from llama_index.postprocessor.dashscope_rerank import DashScopeRerank
 
-from models import MODEL_REGISTRY
-from models.base_model import BaseModel
-from models.response import ModelResponse, ModelResponseGen
-from enumeration.model_enum import ModelEnum
-
+from memory_scope.enumeration.model_enum import ModelEnum
+from memory_scope.models.base_model import BaseModel, MODEL_REGISTRY
+from memory_scope.models.model_response import ModelResponse
 
 
 class LlamaIndexRerankModel(BaseModel):
     m_type: ModelEnum = ModelEnum.RANK_MODEL
 
-    MODEL_REGISTRY.batch_register([
-        DashScopeRerank
-    ])
+    MODEL_REGISTRY.register("dashscope_rank", DashScopeRerank)
 
     def before_call(self, **kwargs) -> None:
         assert "query" in kwargs or "documents" in kwargs
diff --git a/memory_scope/utils/registry.py b/memory_scope/utils/registry.py
index 9939d3ab..88807387 100644
--- a/memory_scope/utils/registry.py
+++ b/memory_scope/utils/registry.py
@@ -10,7 +10,8 @@ class Registry(object):
         self.name: str = name
         self.module_dict: Dict[str, Any] = {}
 
-    def register(self, module: Any, module_name: str = None):
+    def register(self, module_name: str = None, module: Any = None):
+        assert module is not None
         if module_name is None:
             module_name = module.__name__