ngx_http_upstream_keepalive_module keepalive timeout

Enhance the ngx_http_upstream_keepalive_module to support setting keepalive timeout:

upstream backend {
keepalive 32;
keepalive_timeout 30s; # 设置后端连接的最大idle时间为30s


Syntax: keepalive_timeout time
Default: -
Context: upstream

Controls the max idle time used in backend keepalive connections. The 'time' argument can be an integer, with an optional time unit, like s (second), ms (millisecond), m (minute). The default time unit is s (second).