Processing 75,000 Excel rows client-side: a hyper-optimized JavaScript engine

A developer describes building a client-side engine capable of processing 75,000 Excel rows without sending data to server.

Published 12sem1 source

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The fact

The solution combines WebWorkers, binary streaming, and in-memory indexing to stay responsive on small devices.

A key approach for B2B SaaS tools where data privacy and performance are critical.

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