How to flush the DNS cache of Safari on macOS Mojave without restarting the system?
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To clean DNS cache on macOS, the following command should be used. (commands used to clean caches seems to be different on different version of macOS)
sudo killall -HUP mDNSResponder Clean the DNS cache in Safari. Open Safari, Preferences -> Advanced. Check "Show develop menu in menu bar". Then go to menu bar, Develop -> Empty Caches. The shortcut is ⌥⌘E. (Restart of Safari may be needed)
References
- Flush cache of DNS on macOS Sierra & High Sierra