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annotate mod_graceful_shutdown/README.markdown @ 2188:63764d6e7e38
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author | Kim Alvefur <zash@zash.se> |
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date | Tue, 31 May 2016 16:00:47 +0200 |
parents | 4652a112a4ba |
children | 88474dd1af48 |
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mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
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changeset
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1 This module is an experiment about a more graceful shutdown process. |
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mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
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2 |
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mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
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3 Why |
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mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
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4 === |
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mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
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5 |
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mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
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6 When shutting down, a number of sessions, connections and other things |
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mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
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7 are teared down. Due to all these things happening very quickly, |
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mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
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8 sometimes eg client unavailable notifications don't make it to all |
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mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
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9 remote contacts because the server-to-server connections are teared down |
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mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
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10 just after. |
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mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
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11 |
4652a112a4ba
mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
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12 How |
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mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
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changeset
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13 === |
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mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
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14 |
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mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
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15 This module works by breaking the shutdown process into separate steps |
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mod_graceful_shutdown: Experiment in improving the shutdown experience
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parents:
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16 with a brief pause between them. |
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mod_graceful_shutdown: Experiment in improving the shutdown experience
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17 |
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mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
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18 It goes something like this |
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mod_graceful_shutdown: Experiment in improving the shutdown experience
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19 |
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mod_graceful_shutdown: Experiment in improving the shutdown experience
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20 1. Stop accepting new client connections. |
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mod_graceful_shutdown: Experiment in improving the shutdown experience
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21 2. Close all client connections. |
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mod_graceful_shutdown: Experiment in improving the shutdown experience
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22 3. Fire event for everything else. |
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mod_graceful_shutdown: Experiment in improving the shutdown experience
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23 4. Tell `net.server` to quit the main loop. |
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mod_graceful_shutdown: Experiment in improving the shutdown experience
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24 5. ??? |
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25 6. Still here? Kill itself. |
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mod_graceful_shutdown: Experiment in improving the shutdown experience
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26 |