When it comes to serving static content, Nginx is quite a beast!
当谈到提供静态内容时，Nginx 真是一个野兽！
You can further improve static content handling by enabling open_file_cache in nginx.
您可以通过在 nginx 中启用 open_file_cache 来进一步改进静态内容处理。
Please note that open_file_cache will cache metadata about files only. Not actual content of files. So performance gain by this kind of cache may not be noticeable.
请注意，open_file_cache 将仅缓存有关文件的元数据。不是文件的实际内容。因此，这种缓存带来的性能提升可能并不明显。
Since this is part of Nginx’s core HTTP module, you no need to worry about setup/installation.
由于这是 Nginx 核心 HTTP 模块的一部分，因此您无需担心设置/安装。
open_file_cache 打开文件缓存
Just open /etc/nginx/nginx.conf 只需打开 /etc/nginx/nginx.conf
Add following lines in HTTP block:
在 HTTP 块中添加以下行：
open_file_cache max=10000 inactive=5m; open_file_cache_valid 2m; open_file_cache_min_uses 1; open_file_cache_errors on;
Explanation 解释
If you have way too many files, change max from 10000 to more appropriate value.
如果文件太多，请将 max 从 10000 更改为更合适的值。
If files don’t change much often, or accesses less frequently, you can change inactive duration from 5m to something else. inactive andopen_file_cache_min_uses works together.
如果文件更改频率不高，或者访问频率较低，您可以将非活动持续时间从 5m 更改为其他值。 inactive 和 open_file_cache_min_uses 一起工作。
Above sample tells nginx to cache a file information as long as minimum 2 requests are made during 5m window.
上面的示例告诉 nginx 只要在 5m 窗口内发出至少 2 个请求就缓存文件信息。
open_file_cache_valid tell nginx to check if information it is holding is valid every 2 minutes.
open_file_cache_valid 告诉 nginx 每 2 分钟检查一次它所保存的信息是否有效。
open_file_cache_errors tell nginx to cache errors like 404 (file not found). If you are using nginx as load-balancer, leave this off.
open_file_cache_errors 告诉 nginx 缓存 404（文件未找到）等错误。如果您使用 nginx 作为负载平衡器，请关闭此选项。
For more details, check nginx docs.
有关更多详细信息，请查看 nginx 文档。
Restart 重新开始
Don’t forget to restart nginx.
不要忘记重新启动 nginx。
nginx -t && service nginx restart