Compress body text in database?

[maghoff]

All revisions of all articles are stored uncompressed in the database. Even when there are no changes to the body between revisions, the body is duplicated. This could cause excessive disk usage.

Arguments for no change:

• Disk is cheap
• SQLite needs to understand the body as text for FTS indexing (but see Transform markdown to plainer text for search indexing? #37)
• Adding compression would add complexity

Arguments for change:

• To save disk space
• There are small systems that could run Sausagewiki in which disk space is not cheap