# Scrubber

A scrubber is a mechanism that provides overflow protection in the event of a system
 halt.

The background scrubber has been replaced by a more robust and efficient mechanism for
 recovering overflow after a system halt.

## See also

- [clear-file command](https://d3codex.com/tcl/clear-file-command/)
- [coldstart command](https://d3codex.com/tcl/coldstart-command/)
- [create-file command](https://d3codex.com/tcl/create-file-command/)
- [FID](https://d3codex.com/definitions/fid/)
- [init-ovf command](https://d3codex.com/tcl/init-ovf-command/)
- [Maxfid](https://d3codex.com/definitions/maxfid/)
- [Overflow table](https://d3codex.com/definitions/overflow-table/)
- [set-ovf-reserve command](https://d3codex.com/tcl/set-ovf-reserve-command/)
- [set-runaway-limit command](https://d3codex.com/tcl/set-runaway-limit-command/)
- [user-coldstart macro](https://d3codex.com/tcl/user-coldstart-macro/)
- [what command](https://d3codex.com/tcl/what-command/)

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Source: https://d3codex.com/definitions/scrubber/ - part of the D3Codex reference.