BerkeleyDB seems promising but I couldn't find a limit on the data or number of keys
The limit on data is somewhere in the terabyte range. I don't think there is a limit on the number of keys (I have one with 70 million keys). SQLite is excellent but if you want a drop-in replacement DB_File or BerkeleyDB is the way to go.

In reply to Re: Need DBM file that holds data up to 50,000 bytes by tangent
in thread Need DBM file that holds data up to 50,000 bytes by bulrush

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