---
id: RAILIANCE-WP-0016
type: workplan
title: "Publish apps-pg resource and recovery evidence"
domain: financials
repo: railiance-platform
status: finished
owner: codex
topic_slug: railiance
created: "2026-08-11"
updated: "2026-08-14"
state_hub_workstream_id: "49084fb8-de63-4f32-a4a9-3a42d4e708ac"
related:
  - RAILIANCE-WP-0003
  - RESOURCE-WP-0003
---

# RAILIANCE-WP-0016 — apps-pg resource evidence

## Goal

Provide platform-owned evidence for `resource:railiance:apps-pg`: demand,
utilization, recovery, operations labor, and consumer allocation. Origin:
`RESOURCE-WP-0003-T04` delegated evidence gap.

## T01 — Publish database capacity and utilization

```task
id: RAILIANCE-WP-0016-T01
status: done
priority: high
state_hub_task_id: "c772bcea-7ae0-4532-b434-31f75c905431"
```

Record instance count, CPU/memory requests and observed use, provisioned and
used storage, database growth, connections, I/O or other available saturation
proxies, and consumer database attribution with timestamps and provenance.

Done when resource-control can forecast database capacity without reading
application data or credentials.

## T02 — Publish recovery and operational evidence

```task
id: RAILIANCE-WP-0016-T02
status: done
priority: high
state_hub_task_id: "4eafebd5-0434-42a2-a126-c292c29c1f21"
```

Record backup coverage, restore-test results, recovery objectives, upgrade and
maintenance cadence, incidents, and setup/recurring operator labor. Keep
service procedures and execution in railiance-platform.

Done when the portfolio can distinguish verified recovery, unresolved local
storage risk, and platform labor cost.

## T03 — Define shared database allocation drivers

```task
id: RAILIANCE-WP-0016-T03
status: done
priority: medium
state_hub_task_id: "fc329443-a2fc-4409-b670-dfb103df2794"
```

Publish candidate consumer drivers such as database storage GB-month,
connections, transactions, or measured I/O. Include shared overhead,
unattributed residual, method version, and uncertainty.

Done when resource-control can allocate a referenced apps-pg cost without
making railiance-platform a financial ledger.

## Outcome

Published 2026-08-14. Observation
`docs/evidence/RAILIANCE-WP-0016-apps-pg-observation.json` and narrative
`docs/evidence/RAILIANCE-WP-0016-apps-pg-resource-evidence.md`.

- T01: 1/1 instance, 10Gi local-path, 590 MiB PGDATA, no CPU/memory
  requests, two consumer catalogs (~16.6 MiB), `vergabe_db` unused.
- T02: no ScheduledBackup, not an Option A target, RPO unbounded, RTO
  undefined — unresolved local-storage risk. Labor: ~6h setup, ~0.5h/month
  recurring, high uncertainty, no EUR.
- T03: method `apps-pg-dbbytes-v1`, driver `database_gb`, residual
  `platform:apps-pg-overhead` (94.8% of used volume is WAL/catalog).

Refresh: `make apps-pg-evidence`. resource-control can now replace the
illustrative `examples/control-cycle/apps-pg-*.json` fixtures.