## Summary
The worker-version resolve path fetched every column of every
`BackgroundWorkerTask` for a worker (`include: { tasks: true }`), plus
full `WorkerDeployment` and `TaskQueue` rows, just to match one task at
dequeue. That pulls large JSON columns none of this path reads (task
`payloadSchema`/`config`/`queueConfig`/`description`, deployment
`externalBuildData`/`buildServerMetadata`/`errorData`/`git`, queue
`rateLimit`), so each resolve transfers and deserializes far more than
it uses.
## Fix
Replace the includes with explicit `select`s of only the columns dequeue
reads, in both the passthrough resolver and the app resolver:
- task: `id`, `slug`, `machineConfig`, `retryConfig`,
`maxDurationInSeconds`
- deployment: `id`, `friendlyId`, `imageReference`, `imagePlatform`
- queue: `id`, `name` (the queue matcher keys on both)
The shared `ResolvedWorkerVersion` element types narrow to match
(mirrored in the cache), which also shrinks each cached worker-version
entry.
## Impact
The `tasks` read fetches every task of a worker to match one, so its
cost scales with task count and payload-schema size. For a worker with
~70 registered tasks, dropping the unread columns cuts the per-query
transfer roughly:
| Task shape | Before | After | Reduction |
|---|---|---|---|
| Light (no payload schema, small config) | ~28 KB | ~14 KB | ~54% |
| Typical (mixed schemas / config) | ~62 KB | ~14 KB | ~77% |
| Schema-heavy (large `payloadSchema`) | ~200 KB | ~14 KB | ~93% |
The `after` size is roughly fixed because the kept columns are small;
the win grows with how heavy the dropped JSON is. Narrowing `deployment`
(four JSON columns off a single row) and `queues` saves further on top.
No behavior change: pure read-shape narrowing, no flag and no schema
change, so rollback is a plain revert. Verified with a red/green
run-engine test that asserts the resolved task, deployment, and queue
carry only the used columns, plus the queue feature-matrix runs (batch,
retry-policy, machine-preset, plain trigger) that exercise the kept
columns.
Eric Allam
8dc8e1b58b