# Operations

Operational procedures for running ELS Compass: worker topology, ingestion,
backfills, index rebuilds, administrative bootstrap, and model capacity checks.

Each page documents the flow, the controls available, the outputs to expect, and
the common failure modes.

## Worker Topology

| Page | What it covers |
| --- | --- |
| [Worker split](worker-split.md) | Running ingestion inside the API process or as a separate process. |
| [Ingestion worker](ingestion-worker.md) | The standalone worker CLI, its startup checks, and its claim-and-run loop. |

## Index And Projection Maintenance

| Page | What it covers |
| --- | --- |
| [Rebuild document catalog](rebuild-document-catalog.md) | Backfilling and repairing the document catalog projection. |
| [Rebuild retrieval pyramid](rebuild-retrieval-pyramid.md) | Rebuilding document profile and section summary projections. |

## Backfills

| Page | What it covers |
| --- | --- |
| [Backfill language](backfill-language.md) | Populating detected document language on existing records. |
| [Backfill semantic profiles](backfill-semantic-profiles.md) | Generating semantic profiles for documents ingested before the feature existed. |
| [Backfill conversation memory](backfill-conversation-memory.md) | Rebuilding conversation memory from persisted turns. |

## Administration And Capacity

| Page | What it covers |
| --- | --- |
| [Bootstrap admin](bootstrap-admin.md) | Creating the first product administrator before initial login. |
| [Model capacity audit](model-capacity-audit.md) | Checking whether the deployment can host the configured models. |
| [Model residency monitor](model-residency-monitor.md) | Observing which models are resident on which nodes. |

```{toctree}
:maxdepth: 2
:hidden:

worker-split
ingestion-worker
rebuild-document-catalog
rebuild-retrieval-pyramid
backfill-language
backfill-semantic-profiles
backfill-conversation-memory
bootstrap-admin
model-capacity-audit
model-residency-monitor
```