Is there any nosql flat file database just as sqlite? [closed]
BerkeleyDB is a widely-used embedded database that's been around forever (it originally derived from the database library included in BSD, hence the name) and has excellent performance characteristics for many use cases (and caching is a frequently-used one), but it does have some significant limitations.
If you want to use it with Python, you'll probably want the externally-maintained pybsddb/bsddb3 library, not the deprecated bsddb library included in Python 2.x (and no longer in 3.x).
It's currently owned by Oracle, but available under an open-source license. Do take careful note of licensing terms -- current versions are GPLish (and GPL-compatible), so make sure that's compatible with what you plan to do.
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