title: Export big amount of data from XLSX - OutOfMemoryException
body: <p>I am approaching to export a big amount of data (115.000 rows x 30 columnd) in Excel OpenXML Format (xlsx).
  I am using some libraries like DocumentFormat.OpenXML, ClosedXML, NPOI.</p>
  
  <p>With each of this, OutOfMemoryException is thrown because the representation of the sheet in the memory causes an exponential memory increase. </p>
  
  <p>Also closing the document file every 1000rows (and releasing memory), the next loading causes memory increase.</p>
  
  <p>Is there a more performant way to export data in xlsx without occupy a lot of memory?</p>