The multilayered approach is something we also do in one area, but at a certain point you are still playing dangerous games with the filesystem. The most recen

The multilayered approach is something we also do in one area, but at a certain point you are still playing dangerous games with the filesystem. The most recent innovation for us is to use a lot of smaller SQLite databases, each scoped to a specific customer, session or unit of work. This is still far superior to loose records on disk, but you also get clear separation and reasonable firewalls between system entities.