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annotate mod_graceful_shutdown/README.markdown @ 4989:b74d592df9e2

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mod_http_muc_log: Remove dead code This might be something left over since a different variant where the loop went like `for n = i-1, i-100, -1 do ... end` i.e. it went trough a fixed number of items instead of all the page until the current message. Then it would have needed something to stop going over the end, but since the checks are simple it shouldn't be much of a problem looping over even a very busy day.
author Kim Alvefur <zash@zash.se>
date Tue, 16 Aug 2022 01:27:59 +0200
parents 999e7cb7f6d9
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1 ::: {.alert .alert-warning}
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2 This module is an experiment about a more graceful shutdown process.
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4 Graceful shutdown has now been implemented in Prosody trunk and will be
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5 part 0.12. See [issue #1225](https://issues.prosody.im/1225) for
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6 details.
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7 :::
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8
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9 Why
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10 ===
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11
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12 When shutting down, a number of sessions, connections and other things
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13 are teared down. Due to all these things happening very quickly,
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88474dd1af48 Various READMEs: s/eg/e.g.g/
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14 sometimes e.g. client unavailable notifications don't make it to all
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15 remote contacts because the server-to-server connections are teared down
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16 just after.
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18 How
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19 ===
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21 This module works by breaking the shutdown process into separate steps
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22 with a brief pause between them.
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23
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24 It goes something like this
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26 1. Stop accepting new client connections.
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27 2. Close all client connections.
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28 3. Fire event for everything else.
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29 4. Tell `net.server` to quit the main loop.
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30 5. ???
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31 6. Still here? Kill itself.
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32