Learn how DNS cache works on Windows, Linux, and MAC OS X. Included in the presentation you'll find the commands needed to clear the DNC cache on your system.

1. Facebook Live Demo

2. netbeez.net

3. netbeez.net
DNS Caching is enabled by default on Windows and MAC OS X operating systems, and is
not enabled on most Linux distributions (install nscd if needed).

4. DNS performance as measured by NetBeez sensors:
50 ms. = Average DNS query time
150/200 ms. = DNS query time
netbeez.net

5. netbeez.net

6. ipconfig /displaydns
sudo killall -HUP mDNSResponder;
sudo killall mDNSResponderHelper;
sudo dscacheutil -flushcache
/etc/init.d/nscd stop
/etc/init.d/nscd start
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