Sam 120fa8ad2f
PERF: Introduce absolute limit of digests per 30 minutes (#10845)
To avoid blocking the sidekiq queue a limit of 10,000 digests per 30 minutes
is introduced.

This acts as a safety measure that makes sure we don't keep pouring oil on
a fire.

On multisites it is recommended to set the number way lower so sites do not
dominate the backlog. A reasonable default for multisites may be 100-500.

This can be controlled with the environment var

DISCOURSE_MAX_DIGESTS_ENQUEUED_PER_30_MINS_PER_SITE
2020-10-07 17:30:15 +11:00
..
2020-06-10 12:20:17 +10:00