대규모 미확인 사용자 알림으로 인해 대형 큐에서 발생하는 매우 느린 Sidekiq 문제

Update: Still running slow and the queue is building up. See a lot of postmaster processes via ‘top’. ~85% total cpu usage (32 cores), the vast majority of that being from postmaster. Which is interesting, as earlier today the cpu usage was 20-35% (sidekiq was still moving slow at that time also). Related: Primary Postgres database process (postmaster) eating all CPU - #5 by pfaffman