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 
980 posts

Ultimate Geek


  #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.


15801 posts

Uber Geek

Trusted
Subscriber

  #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.


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



Twitter and LinkedIn »



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 10th Gen Intel Core H-series for mobile devices
Posted 2-Apr-2020 21:09


COVID-19: new charitable initiative to fund remote monitoring for at-risk patients
Posted 2-Apr-2020 11:07


Huawei introduces the P40 Series of Android-based smartphones
Posted 31-Mar-2020 17:03


Samsung Galaxy Z Flip now available for pre-order in New Zealand
Posted 31-Mar-2020 16:39


New online learning platform for kids stuck at home during COVID-19 lockdown
Posted 26-Mar-2020 21:35


New 5G Nokia smartphone unveiled as portfolio expands
Posted 26-Mar-2020 17:11


D-Link ANZ launches wireless AC1200 4G LTE router
Posted 26-Mar-2020 16:32


Ring introduces two new video doorbells and new pre-roll technology
Posted 17-Mar-2020 16:59


OPPO uncovers flagship Find X2 Pro smartphone
Posted 17-Mar-2020 16:54


D-Link COVR-2202 mesh Wi-Fi system now protected by McAfee
Posted 17-Mar-2020 16:00


Spark Sport opens its platform up to all New Zealanders at no charge
Posted 17-Mar-2020 10:04


Spark launches 5G Starter Fund
Posted 8-Mar-2020 19:19


TRENDnet launches high-performance WiFi Mesh Router System
Posted 5-Mar-2020 08:48


Sony boosts full-frame lens line-up with introduction of FE 20mm F1.8 G large-aperture ultra-wide-angle prime Lens
Posted 5-Mar-2020 08:44


Vector and Spark teamed up on smart metering initiative
Posted 5-Mar-2020 08:42



Geekzone Live »

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


Support Geekzone »

Our community of supporters help make Geekzone possible. Click the button below to join them.

Support Geezone on PressPatron



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.