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Volker Krause authored
So far this were offsets into the the IANA string table, now it's a flat enum. The old way needed 13 bits per record, the new only needs 9 bit, at the cost of an extra ~800 bytes for an offset table to get back to IANA names. This however quickly pays of when storing large quantities, which we do (~37k in the current database, more in the upcoming experiments for an efficient geo coordinate to timezone mapping).
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