Mercurial > prosody-modules

annotate mod_graceful_shutdown/README.markdown @ 4446:3d593b612e07

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
mod_smacks: Request ack on signal of ongoing CSI flush Should make it finally behave with mod_csi_simple from Prosody trunk
author Kim Alvefur <zash@zash.se>
date Tue, 16 Feb 2021 23:16:05 +0100
parents 88474dd1af48
children 999e7cb7f6d9
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
2170
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
1 This module is an experiment about a more graceful shutdown process.
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
2
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
3 Why
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
4 ===
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
5
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
6 When shutting down, a number of sessions, connections and other things
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
7 are teared down. Due to all these things happening very quickly,
2818
88474dd1af48 Various READMEs: s/eg/e.g.g/
Kim Alvefur <zash@zash.se>
parents: 2170
diff changeset
8 sometimes e.g. client unavailable notifications don't make it to all
2170
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
9 remote contacts because the server-to-server connections are teared down
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
10 just after.
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
11
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
12 How
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
13 ===
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
14
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
15 This module works by breaking the shutdown process into separate steps
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
16 with a brief pause between them.
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
17
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
18 It goes something like this
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
19
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
20 1. Stop accepting new client connections.
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
21 2. Close all client connections.
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
22 3. Fire event for everything else.
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
23 4. Tell `net.server` to quit the main loop.
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
24 5. ???
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
25 6. Still here? Kill itself.
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
26