enhancement: Early return in Each method when no servers are available #189
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Summary
This PR improves the performance and clarity of the
Eachmethod inServerListby adding an early return when there are no server addresses (ss.addrs) to iterate over.Changes
len(ss.addrs) == 0check at the beginning ofEach()to returnErrNoServersimmediately, avoiding unnecessary locking and iteration.Each()is frequently called (e.g.,Client.Ping()).Benefits
Ping()response time when no servers are available.