https://answer.freetools.me/tags/%E5%BF%83%E8%B7%B3/ Recent content in 心跳 on Answer Hugo -- 0.152.2 zh-cn Fri, 06 Mar 2026 02:17:45 +0800 https://answer.freetools.me/tcp-keepalive-%E4%B8%BA%E4%BB%80%E4%B9%88%E6%95%91%E4%B8%8D%E4%BA%86%E4%BD%A0%E7%9A%84%E9%95%BF%E8%BF%9E%E6%8E%A5/ Fri, 06 Mar 2026 02:17:45 +0800 https://answer.freetools.me/tcp-keepalive-%E4%B8%BA%E4%BB%80%E4%B9%88%E6%95%91%E4%B8%8D%E4%BA%86%E4%BD%A0%E7%9A%84%E9%95%BF%E8%BF%9E%E6%8E%A5/ 深入解析 TCP Keepalive 机制的局限性，以及为什么现代网络环境下的长连接保活必须依赖应用层心跳。从 NAT 超时到负载均衡器配置，全面覆盖长连接断开的真实原因与解决方案。