Package application_api pertains to the RPC and HTTP APIs exposed by the application layers, including SQL and tenant-scoped HTTP.

Package settingswatcher provides utilities to update cluster settings using a range feed.

Package storage_api pertains to the RPC and HTTP APIs exposed by the storage and KV layers.

Package telemetry contains helpers for capturing diagnostics information.

Package tenantsettingswatcher implements an in-memory view of the tenant_settings table (containing overrides for tenant settings) using a rangefeed.