If I'm using the JS React Library, and a backend l...
# ask-questionsf
faint-portugal-8257
04/28/2022, 2:01 AMIf I'm using the JS React Library, and a backend library like Kotlin or Python, is there a way to sync the browser plugin's variant selection tool to the backend growthbook sdk as well
faint-portugal-8257
04/28/2022, 2:01 AMIs there a best practice for syncing growthbook variants between JS and Server SDKs?
faint-portugal-8257
04/28/2022, 2:04 AMWe're currently assuming that if the session IDs are shared and therefore equal, the hashing to determine variants will end up producing equal variant assignments.
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fresh-football-47124
04/28/2022, 2:07 AM
hi
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fresh-football-47124
04/28/2022, 2:08 AM
yes, the hashing algorithm is the same across all our SDKs
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faint-portugal-8257
04/28/2022, 2:09 AMHello! Excellent, that makes sense. Should we expect identifier to act as a seed then, and get identical intial variant assignments in browser and server side?
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fresh-football-47124
04/28/2022, 2:10 AM
most dont bother syncing and just do the variation assignment again. The experiment report will take care of dupes
fresh-football-47124
04/28/2022, 2:10 AM
yes, it uses deterministic hashing
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faint-portugal-8257
04/28/2022, 2:12 AMGreat! Any insight into how the browser extension works? Obviously out of the box I wouldn't expect it to also be able to toggle the server's feature flag assignments. But is there a way to force a variant on the server?
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fresh-football-47124
04/28/2022, 2:14 AM
The chrome extension only works with front-end SDKs right now. What server language are you using? Some of the server SDKs have other ways to force feature values
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faint-portugal-8257
04/28/2022, 2:14 AMWe've repurposed the Koltin Android library for use in a Spring Boot app
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fresh-football-47124
04/28/2022, 2:18 AM
There's a setForcedVariations method that takes a HashMap for the Kotlin SDK
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faint-portugal-8257
04/28/2022, 2:19 AMExcellent, I see it in there. Thanks for the help! Will build out something to allow easy switching on our side.
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