Upgrade Sidekiq to latest
We're currently running Sidekiq 4.0.1. 4.0.0 was a pretty crazy rewrite of internals so I'm inclined to believe that 4.1.2 probably has some fixes we can take advantage of. This is something we hope may improve the current situations we're encountering on GitLab.com and with a large customer. No guarantees.
@DouweM Can we allocate a small amount of dev time to get this in an 8.7 RC so we can see how it works on GitLab.com?