How expensive is querying the cluster health

I would like to understand better how expensive the client.admin().cluster().prepareHealth().get().getStatus() is. Is this something you can do every 10 seconds, every second, multiple times per second? What is the impact? I'm using ES 2.4 right now.

do you want to get the status of the cluster then just use the default endpoint / it will be fast and will give you a 200 unless the cluster is red then it will respond with a 500. you can also hammer it with requests that should be fine.

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