[fix] Avoid unnecessary index creation costs

api/app/core/memory/agent/utils/write_tools.py

@@ -151,11 +151,6 @@ async def write(
 
     # Step 3: Save all data to Neo4j database
     step_start = time.time()
-    from app.repositories.neo4j.create_indexes import create_all_indexes
-    try:
-        await create_all_indexes()
-    except Exception as e:
-        logger.error(f"Error creating indexes: {e}", exc_info=True)
 
     # 添加死锁重试机制
     max_retries = 3

api/app/main.py

@@ -62,6 +62,15 @@ async def lifespan(app: FastAPI):
         logger.info("预定义模型加载已禁用 (LOAD_MODEL=false)")
 
     logger.info("应用程序启动完成")
+
+    # 初始化 Neo4j 索引和约束（仅启动时执行一次）
+    try:
+        from app.repositories.neo4j.create_indexes import create_all_indexes
+        await create_all_indexes()
+        logger.info("Neo4j 索引和约束初始化完成")
+    except Exception as e:
+        logger.warning(f"Neo4j 索引初始化失败（服务仍可启动，但查询性能可能受影响）: {e}")
+
     yield
     # 应用关闭事件
     logger.info("应用程序正在关闭")