Les publications en succession rapide n'envoient pas tous les e-mails

Soutien
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This forum must approve all posts. As a result some posts are published in rapid succession: when a moderator logs in they approve the posts quickly after each other.

Most categories are set to “watching” for all users and almost no users log in, the forum is relying very heavily on email notifications.

The problem is that whenever posts are published in rapid succession (less than 1.5 minutes apart), not all emails are being sent. This query shows the count of all sent emails (entries in email_logs per topic). The amount of users that should be getting an email is around 2250. When people have logged in recently (about 1%) they don’t get an email, so the number varies a bit but should be between 2200 and 2250.

As you can see in the first three lines, posts published quickly after each other do not have the full amount of emails.

What could be going on here?

Oh, max_emails_per_day_per_user is set to something really high.

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columns: topic, date/time, category, # emails sent

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Au cours des derniers mois, nous avons eu de nouvelles perspectives :

  • le problème ne venait pas des e-mails eux-mêmes, mais de la génération des notifications sous-jacentes
  • la génération de nombreuses notifications en succession rapide entraîne le redémarrage de Sidekiq avec le message Sidekiq consomme trop de mémoire
  • le redémarrage de Sidekiq entraîne l’abandon du lot actuel de notifications en cours de génération pour un article, ce qui aboutit à un ensemble incomplet de notifications.

EDIT l’augmentation de UNICORN_SIDEKIQ_MAX_RSS a empêché que ce problème ne se reproduise au cours des 9 derniers jours.

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