This commit introduces an ultra low priority queue for post rebakes. This
way rebakes can never interfere with regular sidekiq processing for cases
where we perform a large scale rebake.
Additionally it allows Post.rebake_old to be run with rate_limiter: false
to avoid triggering the limiter when rebaking. This is handy for cases
where you want to just force the full rebake and not wait for it to trickle
This ensures that unicorn master forks of sidekiq run with a lower priority
than the webs. It means that a busy sidekiq is less likely to impact web
performance
This commit introduces 3 queues for sidekiq
"critical" for urgent jobs (weighted at 4x weight)
"default" for standard jobs(weighted at 2x weight)
"low" for less important jobs
"critical jobs"
Reset Password emails has been seperated to its own job
Heartbeat which is required to keep sidekiq running
Test email which needs to return real quick
"low priority jobs"
Notify mailing list
Pull hotlinked images
Update gravatar
"default"
All the rest
Note: for people running sidekiq from command line use
bin/sidekiq -q critical,4 -q default,2 -q low
After fork SiteSettings was not getting a new process id,
causing site settings not to refresh properly in unicorn
This code also centralizes the logic
