We are trying to implement a new VCL to vary caching based on certain bots. Please see recv VCL as implemented below.
if ( req.http.User-Agent ~ "(?i)(ads|Google|bing|msn|yandex|baidu|ro|career|seznam|)bot" )
set req.http.X-UA-Device = "Googlebot";
set req.http.Vary = " X-UA-Device";
Do you see any issues that could bring a performance impact on the above mentioned?
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