Why are you afraid of having hundreds of tiny files?

Maybe just irrational sense of orderliness. Thinking of a few hundred files per week added in a directory, extrapolated to an estimated lifespan of the application over several years, just makes me feel uncomfortable.

I don't see how shared memory would help in this respect, but maybe I just don't have enough experience with it on Windows. In particular, I don't see what advantage I gain in getting added up dozens of shared memory handles per day, opposed to files (except maybe that shared memory disappears in case the system is rebooted).

I was thinking also to use some database, but this seemed to me too heavyweight for what I wanted to achieve. But thanks for the suggestions.