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发布时间:2022-11-02 来源:西安鲲之鹏官微
【经验分享】apache mod_proxy实现url转发时如何避免后端域名的DNS缓存
方法如下示例,加项disablereuse=On配置项即可:
ProxyPass / http://后端域名/ retry=0 disablereuse=On
关于disablereuse参数mod_proxy文档(https://httpd.apache.org/docs/2.4/mod/mod_proxy.html)有说明:
This parameter should be used when you want to force mod_proxy to immediately close a connection to the backend after being used, and thus, disable its persistent connection and pool for that backend. This helps in various situations where a firewall between Apache httpd and the backend server (regardless of protocol) tends to silently drop connections or when backends themselves may be under round- robin DNS. When connection reuse is enabled each backend domain is resolved (with a DNS query) only once per child process and cached for all further connections until the child is recycled. To disable connection reuse, set this property value to On.
方法如下示例,加项disablereuse=On配置项即可:
ProxyPass / http://后端域名/ retry=0 disablereuse=On
关于disablereuse参数mod_proxy文档(https://httpd.apache.org/docs/2.4/mod/mod_proxy.html)有说明:
This parameter should be used when you want to force mod_proxy to immediately close a connection to the backend after being used, and thus, disable its persistent connection and pool for that backend. This helps in various situations where a firewall between Apache httpd and the backend server (regardless of protocol) tends to silently drop connections or when backends themselves may be under round- robin DNS. When connection reuse is enabled each backend domain is resolved (with a DNS query) only once per child process and cached for all further connections until the child is recycled. To disable connection reuse, set this property value to On.
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