<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">
<div>The whole point of the DNS director and it's TTL settings is to have Varnish automatically update the backend definitions based on TTL. So the only option you have is AFAIK:</div>
<div>1) To lower the TTL so it won't become a problem (speed up your DNS)</div><div>2) To modify the DNS director and implement flushing through VCL</div></div></div></div></blockquote><div style><br></div><div style>
Thanks,perbu ,I can achieve the first method , and could you please teach me more about the second method , how does this vcl look like ?</div><div style>many thanks , :-) </div></div></div></div>