Queue
For "How jobs are picked up" — intro page header.
Retry with backoff
For "Handling failures" — retry policy header.
Fan-out / fan-in
For "Batch and parallel work" — fan-out pattern header.

## Palette & rules

ivory
#FAF9F5
slate
#141413
clay
#D97757
olive
#788C5D
oat
#E3DACC
gray-150
#F0EEE6
gray-300
#D1CFC5
gray-500
#87867F

- Strokes are 1.5px for neutral boxes, 2px for emphasised containers.
- All rectangles use `rx="10"`; no drop shadows or gradients.
- Labels inside boxes are 11px mono; annotations outside are 12px sans, gray-500.
- Clay marks "the thing in focus"; olive marks "success / done".
- Each SVG carries its own `<style>` block so the download stands alone.