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Refactor ReachabilityWorker to use a 5-phase reachability testing approach

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It will check reachability for an instance deemed unreachable at the following intervals:

4 attempts, once a minute
4 attempts, once every 15 minutes
4 attempts, once every 60 minutes
4 attempts, once every 8 hours
4 attempts, once every 24 hours

This should be effective and respectful of the resources of instances on the fediverse.

We have the Oban Pruner plugin enabled to keep the Oban Jobs table from growing indefinitely. It prunes every 15 minutes, but this will interfere with our ability to enforce uniqueness on the ReachabilityWorker jobs for a time period longer than 15 minutes. The solution is to exclude the ReachabilityWorker from the pruning operation and instead schedule a custom job that will prune the table for us once a day. The ReachabilityPruner cron task will clean up the history of the ReachabilityWorker jobs older than 6 days.
This commit is contained in:
Mark Felder 2025-06-27 16:35:10 -07:00
commit 77dca7c3e5
5 changed files with 296 additions and 60 deletions
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5
config/config.exs
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@ -599,11 +599,12 @@ config :pleroma, Oban,
search_indexing: [limit: 10, paused: true],
slow: 5
],
plugins: [{Oban.Plugins.Pruner, max_age: 900}],
plugins: [{Oban.Plugins.Pruner, max_age: 900, exclude: [Pleroma.Workers.ReachabilityWorker]}],
crontab: [
{"0 0 * * 0", Pleroma.Workers.Cron.DigestEmailsWorker},
{"0 0 * * *", Pleroma.Workers.Cron.NewUsersDigestWorker},
{"*/10 * * * *", Pleroma.Workers.Cron.AppCleanupWorker}
{"*/10 * * * *", Pleroma.Workers.Cron.AppCleanupWorker},
{"0 2 * * *", Pleroma.Workers.Cron.ReachabilityPruner}
]
config :pleroma, Pleroma.Formatter,