Core groups have low latency (only one network hop) between members.
核心组成员之间延迟较低(只有一个网络跃点)。
One important difference with tcpdump is that, unlike iptrace, it can look at only one network interface at a time.
tcpdump与iptrace的一个重要区别是,它一次只能查看一个网络接口。
This tight coupling among JVMs provides low message latency (only one network hop between any member) and fast failure detection.
JVM 之间的紧密耦合提供了较低的消息延迟(任何成员之间只有一个网络跳转)和快速的故障检测。
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