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Update README.md

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Added question about charts and formulas in the FAQ
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Adrien Loison 2015-05-29 09:39:36 -07:00
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@ -250,6 +250,11 @@ Here are a few numbers regarding the performance of Spout:
| Read XLSX (using shared strings) | 1 second | 1-2 minutes | 35-40 minutes |
| Write XLSX | 1 second | 20-25 seconds | 8-10 minutes |
#### Does Spout support charts or formulas?
No. This is a compromise to keep memory usage low. Charts and formulas requires data to be kept in memory in order to be used.
So the larger the file would be, the more memory would be consumed, preventing your code to scale well.
## Support