I would like to initiate feature flag driven development in my current company. I saw several ideas like what Etsy built https://github.com/etsy/feature but I wonder whether this is good idea or not.

From my perspective, that way will mess up the logic in my code and not scalable in micro services .I can imagine that will be a ton of bugs when I didn't put the logical condition in one of my services.

So anyone has experience in doing feature flag in micro services?