feat: LLM 应用网页开发及内联建议功能实现

backend/main.py

@@ -26,6 +26,15 @@ logging.basicConfig(
 )
 logger = logging.getLogger("api")
 
+_markitdown_instance = None
+
+
+def _get_markitdown():
+    global _markitdown_instance
+    if _markitdown_instance is None:
+        _markitdown_instance = markitdown.MarkItDown()
+    return _markitdown_instance
+
 app = FastAPI()
 
 ACTIVE_COMPLETIONS: dict[str, asyncio.Task] = {}
@@ -310,8 +319,8 @@ async def convert_to_markdown(request: ConvertRequest, api_key: str = Security(g
 
         try:
             # Convert using MarkItDown
-            md = markitdown.MarkItDown()
-            result = md.convert(tmp_path)
+            md = _get_markitdown()
+            result = await asyncio.to_thread(md.convert, tmp_path)
             markdown_text = _sanitize_converted_markdown(result.text_content)
 
             logger.info(