view mod_graceful_shutdown/README.markdown @ 3756:ba4f45b8678f

mod_http_index: Hide http apps that haven't set a title by default This setting was meant to default to this but by some mistake defaulted to true. Apps that haven't set a title might not be meant to be user facing, so hiding them makes sense.
author Kim Alvefur <zash@zash.se>
date Sat, 23 Nov 2019 04:48:25 +0100
parents 88474dd1af48
children 999e7cb7f6d9
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This module is an experiment about a more graceful shutdown process.

Why
===

When shutting down, a number of sessions, connections and other things
are teared down. Due to all these things happening very quickly,
sometimes e.g. client unavailable notifications don't make it to all
remote contacts because the server-to-server connections are teared down
just after.

How
===

This module works by breaking the shutdown process into separate steps
with a brief pause between them.

It goes something like this

1.  Stop accepting new client connections.
2.  Close all client connections.
3.  Fire event for everything else.
4.  Tell `net.server` to quit the main loop.
5.  ???
6.  Still here? Kill itself.