,p>I don't know about Spreadsheet::XLSX but Spreadsheet::ParseExcel, on which it is modeled, has the ability to specify a cell handler. This avoids the need to store the entire parsed spreadsheet. You just the extract the data you need as it is being parsed.

Its use in controling memory usage is discussed in the documentation at Reducing-the-memory-usage-of-Spreadsheet::ParseExcel of Spreadsheet::ParseExcel

Update: Added a little more expanation

In reply to Re: Out of Memory while using Spreadsheet::XLSX by sn1987a
in thread Out of Memory while using Spreadsheet::XLSX by Anonymous Monk

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