The way the db files are written could be an issue... about nedb HOT 1 CLOSED

I use this append-only format because append to a file is much, much faster than rewiting the file everytime. I was considering implementing autocompaction when the datafile becomes too large, but I'm not even sure it is needed, because even if your application stays open for a whole day, the DB size will not be too large (if you give me your expected size and update per document and per day we can estimate the size it would reach) and will be compacted upon every start.

Also, this format has no impact on the size of data in RAM, no memory leak here, only the datafile is concerned. If you're really worried you could call loadDatabase from time to time, which will have the effect of compacting the DB, but make sure it's worth it, HDD space costs really nothing.

I also may implement auto-compacting in the future.

Last note : that's the way popular databases such as Redis work.

I'll close this and reopen when I implenment autocompaction

from nedb.