In Kyoto Cabinet Database using File Hash Database, how can avoid file size increasing?
Try this:
db.kch#dfunit=8That means the KC runs defrag for every 8 fragmentation detected, and 8 is actually recommended by Mikio.
Available options are listed here, however it could use some polish.
running:
kchashmgr defrag path_to_kcabinet_file
is what i do to get the db file 'resized'. I didn't find the api access to this, that's why i do it with a shell command using kchashmgr utility (obviosuly this can be called from inside a program).
I haven't used this particular db but in some other ones a hack to resolve this issue is to copy the db into a new one, and then delete the old one. After making sure it copied well :).
I've implemented this process into production systems, as long as it is coded really really well it should work.