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+---
+author: AI Assistant
+created_at: 2026-07-21
+purpose: 记录 nginx 配置优化，禁用 SSE 响应缓冲
+---
+
+# nginx 配置优化 - ShortNovel SSE
+
+**文件：** `/etc/nginx/sites-enabled/lifescript.happylifeos.com.conf`
+
+**变更内容：**
+在 `location /api/shortNovel/` 块中添加了以下配置：
+- `proxy_buffering off;` - 禁用代理缓冲
+- `proxy_cache off;` - 禁用缓存
+- `chunked_transfer_encoding on;` - 启用分块传输编码
+- `proxy_set_header Connection '';` - 清除 Connection 头
+
+**原因：**
+- nginx 默认启用 `proxy_buffering on`，会缓冲后端响应
+- 对于 SSE（Server-Sent Events）长连接，缓冲会导致事件无法立即到达前端
+- 禁用缓冲后，每个事件都能立即转发给客户端，实现真正的流式传输
+
+**验证：**
+- nginx 语法检查通过：`nginx -t` → syntax is ok / test is successful
+- nginx 重载成功：worker 进程已更新
+- 使用 `curl -N https://lifescript.happylifeos.com/api/shortNovel/stream` 测试 SSE 流式传输
+
+**备份文件：** `/etc/nginx/sites-enabled/lifescript.happylifeos.com.conf.backup.20260721_233252`
+
+**管理方式：** 宝塔面板，通过 `/etc/init.d/nginx reload` 重载配置