Hi Nikita. Can you share any of Neon's techniques for minimizing noisy neighbor issues in the multi tenant storage services? Thanks!
* Large tenants are broken up into shards, reducing hotspots
* Each shard is throttled to a fixed req/s rate
* We do not run pageservers at their redline in terms of CPU load, so there is some slack to take up bursts
* Capacity quotas which selectively throttle write traffic to the largest databases if they are competing with others for disk space, until the larger database is migrated away.