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zycandClaude Opus 4.8 3472c3cc9c 修复整站502(健康探针被慢请求饿死)+全部模特死链+图片并发限流
- 后端 gunicorn 加 --threads 4:纯 sync worker 下几张图就占满 3 worker,
  健康探针 /api/health/ 拿不到 worker→超时→pod 判不就绪→流量被掐→整站502。
  图片生成 I/O 密集,加线程后慢请求不再饿死探针/其他接口。
- 前端图片生成并发上限 2:每张仍独立短请求,但不再 N 条一起砸单 pod 致 OOM。
- ai-tools 全部模特→ 接成展开/收起全部模特(原为纯 span 死链,模特>6 时第7个起选不到)。

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-15 16:15:49 +08:00

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# ---- AirShelf core backend: Django + DRF + gunicorn / celery ----
FROM docker.m.daocloud.io/python:3.12-slim
ENV PYTHONUNBUFFERED=1 \
PYTHONDONTWRITEBYTECODE=1 \
PIP_NO_CACHE_DIR=1 \
PIP_INDEX_URL=https://mirrors.aliyun.com/pypi/simple/
WORKDIR /app
# 视频导出(stage5 拼接)靠 ffmpeg 二进制;字幕用 Pillow 渲染 PNG 需中文字体(fonts-noto-cjk),
# 否则线上导出报 "No such file or directory: 'ffmpeg'" / 中文字幕变方块。slim 镜像默认两者都无。
# 换阿里云 apt 源避免国内构建超时(兼容 bookworm 的 deb822 与旧 sources.list 两种格式)。
RUN (sed -i 's|deb.debian.org|mirrors.aliyun.com|g; s|security.debian.org|mirrors.aliyun.com|g' /etc/apt/sources.list.d/debian.sources 2>/dev/null \
|| sed -i 's|deb.debian.org|mirrors.aliyun.com|g; s|security.debian.org|mirrors.aliyun.com|g' /etc/apt/sources.list 2>/dev/null || true) \
&& apt-get update \
&& apt-get install -y --no-install-recommends ffmpeg fonts-noto-cjk \
&& rm -rf /var/lib/apt/lists/*
# PyMySQL is pure-python (install_as_MySQLdb), boto3/gunicorn need no C deps,
# so the slim image is enough — no build-essential required.
COPY requirements.txt .
RUN pip install --upgrade pip && pip install -r requirements.txt
COPY . .
# Collected admin/static lands here; served by WhiteNoise (see settings/production.py)
RUN mkdir -p /app/staticfiles
COPY docker-entrypoint.sh /usr/local/bin/docker-entrypoint.sh
RUN chmod +x /usr/local/bin/docker-entrypoint.sh
EXPOSE 8000
ENTRYPOINT ["docker-entrypoint.sh"]
# timeout 300:图片生成是慢请求(等 ARK+传 TOS ~30s),300s 给慢 ARK 留充足余量。
# --threads 4:关键!纯 sync worker 下,几张图就能把 3 个 worker 占满,健康探针 /api/health/
# 拿不到 worker → 超时 → pod 被判不就绪 → 流量被掐 → 整站 502(表现:报错但后端在干活、刷新能看到图)。
# 图片生成是 I/O 密集(等 ARK/TOS 时线程让出 GIL),3 worker × 4 线程 = 12 并发,慢请求不再饿死探针。
CMD ["gunicorn", "airshelf.wsgi:application", "--bind", "0.0.0.0:8000", "--workers", "3", "--threads", "4", "--timeout", "300"]