Hello! On Mon, Apr 06, 2020 at 09:55:44AM -0500, J.R. wrote:
> For my setup I use the 'upstream' directive, and in that module there > is the 'keepalive' syntax: > > https://nginx.org/en/docs/http/ngx_http_upstream_module.html#keepalive > > I just noticed today in the proxy module there is the > 'proxy_socket_keepalive' syntax: > > http://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_socket_keepalive > > I'm a little confused... The upstream you set the # of keepalive > connections you want. The proxy module is just an on/off... The "proxy_socket_keepalive" directive is to set the SO_KEEPALIVE socket option, which is to detect broken connections by sending TCP keepalive probes periodically. It is may make sense to turn this on in complex setups if there are upstream connections which does not transfer anything for a long time (for example, when proxying WebSockets with large timeouts). For client-side connections, the same option can be set using the "so_keepalive" parameter of the "listen" directive. While the name is somewhat similar, it is unrelated to keeping connections alive between requests. -- Maxim Dounin http://mdounin.ru/ _______________________________________________ nginx mailing list [email protected] http://mailman.nginx.org/mailman/listinfo/nginx
