- IMAGE_DIR 由硬编码 /home/pixiv/images 改为 (Path(__file__).parent/'../cache/pixiv/images').resolve() (即 source/cache/pixiv/images),mkdir 补 parents=True - systemd/pixiv.service: ExecStart 改为 waitress-serve --host=127.0.0.1 --port=9007 --threads=8 pixiv:app 替代 Flask 开发服务器(thread-per-request 无上限,突发流量下线程爆炸) - __main__ 兜底加 threaded=True,手动运行时不串行