Epplus (Limited - 2027)

Processing: 63,000 rows. 24 columns. Formulas that referenced only the current row. No inter-sheet dependencies. Time to generate: 1.2 seconds. Peak memory: 142 MB.

EPPlus, like all great libraries, had taught him a deeper lesson: EPPlus abstracts away the horror of Open XML’s SharedStringTable and CellValue types, but it cannot abstract away memory. The “deep story” isn’t about Excel—it’s about the gap between what we ask computers to hold and what they can actually hold. epplus

“You’re not writing Excel,” he muttered. “You’re resurrecting a corpse every time.” Processing: 63,000 rows

He closed Visual Studio and opened a terminal. Time to rewrite. like all great libraries