Function lifespan

main.py:689–711

(app: FastAPI)

@asynccontextmanager
async def lifespan(app: FastAPI):
    logger.info("正在初始化应用...")
    # 初始化数据库
    await init_db()

    # 加载配置（多进程下串行化启动写操作）
    async with db_startup_lock():
        await load_config()
    # 启动后台任务
    task = asyncio.create_task(delete_expire_files())
    chunk_cleanup_task = asyncio.create_task(clean_incomplete_uploads())
    logger.info("应用初始化完成")

    try:
        yield
    finally:
        # 清理操作
        logger.info("正在关闭应用...")
        task.cancel()
        chunk_cleanup_task.cancel()
        await asyncio.gather(task, chunk_cleanup_task, return_exceptions=True)
        await Tortoise.close_connections()
        logger.info("应用已关闭")


async def load_config():