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LevelDB is an open-source on-disk key-value store written by Google fellows Jeffrey Dean and Sanjay Ghemawat. [ 2 ] [ 3 ] Inspired by Bigtable , [ 4 ] LevelDB source code is hosted on GitHub under the New BSD License and has been ported to a variety of Unix -based systems, macOS , Windows , and Android .
RocksDB, like LevelDB, stores keys and values in arbitrary byte arrays, and data is sorted byte-wise by key or by providing a custom comparator. RocksDB provides all of the features of LevelDB, plus: Transactions [16] Backups [17] and snapshots [18] Column families [19] Bloom filters [20] Time to live (TTL) support [21] Universal compaction [22]
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The countries in which the French Wikipedia is the most popular language version of Wikipedia are shown in dark blue. Page views by country over time on the French Wikipedia. The audience measurement company Médiamétrie questioned a sample of 8,500 users residing in France with access to Internet at home or at their place of work.
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The National Centre for Distance Education (Centre national d'enseignement à distance or Cned in French) is a French public institution under the oversight of the Department of Education dedicated to providing distance learning material.
As a library (which is the only way to use LevelDB), its native API is C++. It also includes official C wrappers for most functionality. Third-party API wrappers exist for Python, PHP, Go (pure Go LevelDB implementation exists but is in progress still), Node.js and Objective C. Google distributes LevelDB under the New BSD License.
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