Feature description

We should switch to a loop based incremental_vacuum execution with a limited size of pages per call:

PRAGMA incremental_vacuum(500)
PRAGMA wal_checkpoint(PASSIVE)

https://www.sqlite.org/pragma.html#pragma_incremental_vacuum
https://www.sqlite.org/pragma.html#pragma_wal_checkpoint

Problem or use case

We're currently invoking PRAGMA incremental_vacuum without a limit as part of our database maintenance. I see two problems with this approach:

• we can't really deal with long execution times. This might run for ages and the only option would be to bail out
• vacuum puts pressure on the WAL. So if we're getting rid of a metric shit ton of free pages, this has to go through the WAL. see https://www.theunterminatedstring.com/sqlite-vacuuming/

Alternatives or workarounds

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