Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.
View this topic in a long page with up to 500 replies per page Create new topic
1 | 2 
895 posts

Ultimate Geek
+1 received by user: 285


  Reply # 1598088 25-Jul-2016 11:20
One person supports this post
Send private message

freitasm:

 

There is no DNS propagation. DNS does not propagate - records in caches timeout and servers fetch new records. If there's no record in cache then servers will always grab the most updated one regardless of TTL.

 

In the Metaname case, as I mentioned twice before, DNS zones are updated a few times a day (unlike Cloudflare that updates as you create/change records). This means that if a client tries to fetch a DNS record it will come back as non-existent until the zone is updated - which may be an hour or so away.

 

 

+1

 

I feel like a broken record explaining caching vs propogation.  Simple enough mistake to make but it means your mental model ends up totally out of whack with how things are really working, and makes it hard to reason about things like the effect of changing the nameservers for a domain.


14061 posts

Uber Geek
+1 received by user: 2514

Trusted
Subscriber

  Reply # 1598097 25-Jul-2016 11:29
Send private message

DNS is mostly about caching, it can look like propagation sometimes. I've watched record changes on this DNS tool occasionally, to see what's up - sometimes things do take a lot longer for some of the servers.

 

There shouldn't be any significant delay for new records, but the caching at various levels makes it look like propagation when existing records are changed.





AWS Certified Solution Architect Professional, Sysop Administrator Associate, and Developer Associate
TOGAF certified enterprise architect
Professional photographer


1 | 2 
View this topic in a long page with up to 500 replies per page Create new topic

Twitter »

Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:





News »

Intel introduces new NUC kits and NUC mini PCs
Posted 16-Aug-2018 11:03


The Warehouse leaps into the AI future with Google
Posted 15-Aug-2018 17:56


Targus set sights on enterprise and consumer growth in New Zealand
Posted 13-Aug-2018 13:47


Huawei to distribute nova 3i in New Zealand
Posted 9-Aug-2018 16:23


Home robot Vector to be available in New Zealand stores
Posted 9-Aug-2018 14:47


Panasonic announces new 2018 OLED TV line up
Posted 7-Aug-2018 16:38


Kordia completes first live 4K TV broadcast
Posted 1-Aug-2018 13:00


Schools get safer and smarter internet with Managed Network Upgrade
Posted 30-Jul-2018 20:01


DNC wants a safer .nz in the coming year
Posted 26-Jul-2018 16:08


Auldhouse becomes an AWS Authorised Training Delivery Partner in New Zealand
Posted 26-Jul-2018 15:55


Rakuten Kobo launches Kobo Clara HD entry level reader
Posted 26-Jul-2018 15:44


Kiwi team reaches semi-finals at the Microsoft Imagine Cup
Posted 26-Jul-2018 15:38


KidsCan App to Help Kiwi Children in Need
Posted 26-Jul-2018 15:32


FUJIFILM announces new high-performance lenses
Posted 24-Jul-2018 14:57


New FUJIFILM XF10 introduces square mode for Instagram sharing
Posted 24-Jul-2018 14:44



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.