how is shopify rendering the pages with their own made up tags

i know they have something like smarty but i noticed another site called storenvy.com is using the same thing that shopify is. is there an api or something that i dont know about?

they have tags like

{{ shop.url }} 

how are they making this if you k开发者_开发问答now of any tutorial i can get into that would be great thanks

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Shopify uses Liquid to render those tags. It's an open source Ruby library Tobi wrote a while back that makes caching really easy on Shopify’s side.