用户请求域名时，会先进入NGINX，NGINX配置了https，并反向代理到node容器，node端起了一个web服务，一是静态资源访问，二是将所有接口请求代理到后端。
在高并发时，会抛出502异常，NGINX错误日志如下：

2019/11/21 20:10:59 [error] 25#0: *56438 recv() failed (104: Connection reset by peer) while reading response header from upstream, c
lient: 100.104.16.138, server: localhost, request: "POST /pro/v1/mobile/index/board/init HTTP/1.1", upstream: "http://106.11.208.192:
80/pro/v1/mobile/index/board/init", host: "testdingtalkapi3.xbongbong.com"
2019/11/21 20:11:05 [error] 25#0: *83639 recv() failed (104: Connection reset by peer) while reading response header from upstream, c
lient: 100.104.16.183, server: localhost, request: "POST /pro/v1/mobile/process/node/task/index/todoList HTTP/1.1", upstream: "http:/
/106.11.208.193:80/pro/v1/mobile/process/node/task/index/todoList", host: "testdingtalkapi3.xbongbong.com"

网上搜索这个错误信息，答案都是关于PHP的，要修改php.ini的超时时间。如果是nodejs，也是因为超时的原因吗？nodejs的超时配置要在哪里修改？