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Comment on How Instacart Built Its On-Demand Grocery Delivery Service

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This is thorough and well done.

I'm curious why/how Instacart uses both python and ruby for their logistics. Seems like they could just use one.

in the article it mentions how they use python to generate logistics plans, and ruby to serve it to the admin

see/ctrl+f:

B: The data science is what's all in Python, and the application infrastructure is still Ruby.
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