nginx-code-499

Summarizing the examples on the Internet, we get the situation when nginx returns 499:

<code>    client has closed connection    #客户端主动关闭了连接。
</code>

For example, if your website responds too slowly, a white page is displayed for the first time, and a white page is displayed for the second time, and it is disconnected decisively and proactively.

<code>nginx两次提交表单过快，nginx认为连接不安全，主动拒绝客户机的连接
</code>

If it is solved, you can add

<code>    proxy_ignore_client_abort    on;
</code>

There is another reason. It is indeed that the client has closed the connection or the connection has timed out. The main reason is that the number of PHP processes is too small, or the PHP processes are occupied, resources cannot be released quickly, and requests pile up.

To solve it, the program needs to be optimized

The above introduces nginx-code-499, including the relevant content. I hope it will be helpful to friends who are interested in PHP tutorials.