Hello I m using the JavaScript SDK to implement Growthbook t

Question

Hello I m using the JavaScript SDK to implement Growthbook to my api We are using Sails js and fetching feature flag values via Sails policy We are also trying to set attributes inside of the policy right before fetching from GrowthBook API Do the attributes in the growthbook instance sustain through multiple requests We are thinking about setting attributes dynamically based on the API call that is coming in hence there are concerns with race condition depending on how attributes are sustained

future-teacher-7046 · Answer

Hi Karen We recommend creating a new GrowthBook instance for each request in backend APIs with the attributes specific to that request

future-teacher-7046 · Answer

I m not very familiar with Sails js but in Express for example you would add a middleware at the start of the request to create a GrowthBook instance and then be able to use it in any API route

witty-pillow-79680 · Answer

Creating a new instance will work best for us Thank you

witty-pillow-79680 · Answer

< future teacher 7046> I have a follow up question from the onboarding session last week I remembered you said that when a flag is created it will be best to set the default value to `false` However that also means if I enabled an environment the flag is still not on unless I have a forced rule to specify when the value is true Is that correct If I am not using any rules and all I want to do is to enable the entire environment all at once is setting the default value to `true` the right way to go

future-teacher-7046 · Answer

Yeah if you just want to use the environment toggles and not worry about rules or overrides then it s fine to set the default value to `true`