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#ask-questions
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# ask-questions
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square-fall-95777

04/06/2023, 5:16 PM
Hi! I’m writing a JS email-sending script where I’m iterating over a group of users, and want to check whether or not they have the feature to get the email. Using @growthbook/growthbook. Is there a better way than instantiating a new GrowthBook instance for each user and loading their features? Is there a way to load all features at once and hash people’s ids for feature state client-side?
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fresh-football-47124

04/10/2023, 4:30 PM
we designed the growthbook libraries to be very light weight
so you can call it every time, it will be fine
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