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I'd suggest a key-value DBMS, but I throw this out there for interest's sake. Instead of performing INSERT & DELETE statements, only do UPDATEs. The table structure will be something like ID integer -- sequential ID Used boolean -- default FALSE Object -- whatever type is appropriate The object-holding column will be of fixed length to ...


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According to postgresql documentation: VACUUM FULL actively compacts tables by writing a complete new version of the table file with no dead space. This minimizes the size of the table, but can take a long time. It also requires extra disk space for the new copy of the table, until the operation completes. So if you have one big table vacuum full ...


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When the order of pages in the file has no relation to the order of pages on the disk, reordering the file does not make sense.



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