[TelstraClear] Telstra Clear "Transparent" Cache issue?

Forums › One New Zealand (including Vodafone, WxC, Farmside) › [TelstraClear] Telstra Clear "Transparent" Cache issue?

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timmmay

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#659331 20-Jul-2012 22:19

It came right this evening, 48 hours after I set up the domain. Because things weren't working properly last night I did update the name servers again, thinking it might flush it through, but it didn't.

As usual, the story with DNS is just be patient, and don't mess with stuff that you don't need to.

richms

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#659492 21-Jul-2012 12:06

No the story with DNS is to not run retardadly high TTL's on it so that things don't have to wait to expire. I have seen 72hr TTL's on free/junk hosting platforms.

What was the TTL before you changed over to the new records? Unless TC were holding onto things for longer than that period, there was no fault at all.

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timmmay

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#659530 21-Jul-2012 13:56

It's a new domain, the TTL was the default of one day. It took two days to stabilise, but I did update them (with exactly the same data) 24 hours after the domain was created. I think TC has things misconfigured in some odd way, but not sure what exactly.

freitasm

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Geekzone

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#659537 21-Jul-2012 14:11

New domain or not, most people configure TTL to 30 minutes to a couple of hours. Otherwise the DNS down the line doesn't have to query for new records before the TTL expires - meaning any change can take a long time.

timmmay

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#659597 21-Jul-2012 16:51

TTL of 30 minutes seems excessive unless your're planning on moving a domain. Plus I have no idea how to change that setting, the registrar I use for .co.uk is pretty simple.

richms

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#659600 21-Jul-2012 17:00

Ttl is basically setting how long you are happy to have things down for if something unexpected happens. dns is so low overhead its a non issue to take it even lower unless youbare bumbling along on free/cheap hosting.

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timmmay

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#659621 21-Jul-2012 17:18

I know what it is, I just don't know how to change it!

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mercutio

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#660080 22-Jul-2012 21:29

freitasm: New domain or not, most people configure TTL to 30 minutes to a couple of hours. Otherwise the DNS down the line doesn't have to query for new records before the TTL expires - meaning any change can take a long time.

i wouldn't rush to say that most people configure ttl's of 30 minutes...

www.geekzone.co.nz. 14400 IN A 202.175.128.164
- 4 hours

www.geonet.org.nz. 43200 IN A 202.53.191.1
- 12 hours

www.anandtech.com. 7200 IN A 199.19.80.10
- 2 hours

That said google and facebook and some other hugely dispersed sites with ten's to thousands of servers do. Or people who are just ignorant and think that putting a low ttl on all the time will make it easy to move the site when they feel like it.

Usually it is common to decrease the TTL just before moving a site. But not to maintain a low TTL all the time.

mercutio

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#660084 22-Jul-2012 21:32

timmmay: It came right this evening, 48 hours after I set up the domain. Because things weren't working properly last night I did update the name servers again, thinking it might flush it through, but it didn't.

As usual, the story with DNS is just be patient, and don't mess with stuff that you don't need to.

I'd recommend if using apache to just enable a second port that also serves the same web page to bypass the proxy.

Or, if you have ssh access you can tunnel the port through. But it's probably simpler just to enable a second port. Only caveat is you have to add the addtional listening port as well as the virtualhost directive.

You could also do the SSL dance. It's actually quite cheap now days. I think about $7?

timmmay

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#660085 22-Jul-2012 21:35

It's fixed itself now, and I don't have admin access on the host - it's a shared server.

mercutio

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#660086 22-Jul-2012 21:36

timmmay: It's fixed itself now, and I don't have admin access on the host - it's a shared server.

You may have ssh access still?

If it's Hostgator, then:
http://support.hostgator.com/articles/getting-started/how-do-i-get-and-use-ssh-access

I don't know if it allows tunnels or not.

But the transparent proxy may get in the way of site updates too. Mind you force-reload should fix that kind of issue.

timmmay

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#660088 22-Jul-2012 21:39

I have ssh access. I could tunnel via my VPN but didn't think of it at the time.

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