Hey Guys I am looking to evaluate Growthbook and cant find the answer to something I am struggling with. We use next.js with ISR so our site is essentiallly static and split into • .html • .json.html Which is served to the browsers. In front of next.js I have varnish setup to speed up significantly the responses for customers and cache all the above (and js / css/ fonts) but I wanted to know how growthbook can split the cache in varnish In our current setup - we will set a header on the request as it passes through, and this will split the cache - but how would this be achieved in GrowthBook? I have tried looking at all the docs and cant quite find an answer - only another person who was asking a similar thing https://linen.growthbook.io/t/9683395/hey-i-was-wondering-if-anyone-tried-implementing-growthbook- I Saw this but wanted to see how this might work I’m leaning in the run a separate GB SDK direction, throw a unique ID at it, and let it return some flags to query on inside Varnish. Gonna require a bit of tinkering, but might just be the way to go.

Hi Gareth, you can do something similar with GrowthBook with a custom header

Hey @fresh-football-47124 thanks for this I really appreciate the assistance