Override the default backend to prefer gdbm or ndbm#10
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Python 3.13+ defaults to dbm.sqlite3 which fsyncs every write, causing ~100x slower index builds. Override the default backend to prefer gdbm or ndbm which don't have this issue.
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Python 3.13+ defaults to dbm.sqlite3 which fsyncs every write, causing ~100x slower index builds. Override the default backend to prefer gdbm or ndbm which don't have this issue.