Fix: flush database-files every 2 minutes This does increase I/O, but also reduces the lost in data on a new deployment. It is a balancing act, and 2 minutes sounds like a reasonable number. The Seen database of 13 years running supybot is ~1MB. We get ~50KB/s allocated I/O. That means we use 1/6th of the allocation purely on writing the databases. That sounds like a fine balance.