There's no need for zookeeper or any centralised/decentralised service. In the article you link they mention why depending on something like zookeeper is subopt

There's no need for zookeeper or any centralised/decentralised service. In the article you link they mention why depending on something like zookeeper is suboptimal. Given that you have less than something like 2048 web server instances, (don't remember how many bits they give to worker_number and the snowflake github repo is basically unavaible) all you need to do is make sure every instance has a rank/worker_number (infrastructure/devops problem) which the instance will use when it generates the snowflake ids. Sidenote snowflake also suffers from the unix epoch 2038 problem, but that can be simply solved by adding bits for epoch number.