https://engineering.fb.com/2021/02/22/production-engineering/foqs-scaling-a-distributed-priority-queue/attachment/cd21_047_engblog_foqs_flowchart2_final/
CD21_047_ENGBlog_FOQS_Flowchart2_FINAL - Engineering at Meta
Feb 17, 2021 - A single host view of the enqueue design. Note that the MySQL shards are the only component external to the FOQS host.
finalengineeringmeta