diff --git a/pkg/core/bootutils/deps.py b/pkg/core/bootutils/deps.py
index 4adf132..da0ae07 100644
--- a/pkg/core/bootutils/deps.py
+++ b/pkg/core/bootutils/deps.py
@@ -14,6 +14,7 @@ required_deps = {
     "yaml": "pyyaml",
     "aiohttp": "aiohttp",
     "psutil": "psutil",
+    "async_lru": "async-lru",
 }
 
 
diff --git a/pkg/provider/entities.py b/pkg/provider/entities.py
index b892b89..3b87f5c 100644
--- a/pkg/provider/entities.py
+++ b/pkg/provider/entities.py
@@ -24,6 +24,9 @@ class ToolCall(pydantic.BaseModel):
 class ImageURLContentObject(pydantic.BaseModel):
     url: str
 
+    def __str__(self):
+        return self.url[:128] + ('...' if len(self.url) > 128 else '')
+
 
 class ContentElement(pydantic.BaseModel):
 
diff --git a/pkg/provider/modelmgr/apis/chatcmpl.py b/pkg/provider/modelmgr/apis/chatcmpl.py
index 709a65a..028b208 100644
--- a/pkg/provider/modelmgr/apis/chatcmpl.py
+++ b/pkg/provider/modelmgr/apis/chatcmpl.py
@@ -10,6 +10,7 @@ import openai
 import openai.types.chat.chat_completion as chat_completion
 import httpx
 import aiohttp
+import async_lru
 
 from .. import api, entities, errors
 from ....core import entities as core_entities, app
@@ -46,7 +47,6 @@ class OpenAIChatCompletions(api.LLMAPIRequester):
         self,
         args: dict,
     ) -> chat_completion.ChatCompletion:
-        self.ap.logger.debug(f"req chat_completion with args {args}")
         return await self.client.chat.completions.create(**args)
 
     async def _make_msg(
@@ -124,6 +124,7 @@ class OpenAIChatCompletions(api.LLMAPIRequester):
         except openai.APIError as e:
             raise errors.RequesterError(f'请求错误: {e.message}')
 
+    @async_lru.alru_cache(maxsize=128)
     async def get_base64_str(
         self,
         original_url: str,
diff --git a/requirements.txt b/requirements.txt
index e43f9f0..44bc285 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,3 +14,4 @@ pydantic
 websockets
 urllib3
 psutil
+async-lru
\ No newline at end of file