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Eliminate DNS Propagation Lag with a Reverse Proxy – A Case Study

Thu, 11/20/2014 - 16:17 by Chris Burge

The website migration described in this post provides a real-world example of how a reverse proxy server can facilitate a website migration and eliminate the lag caused by DNS propagation.

Summary

The client's situation is summarized below:

  1. Client has a WordPress site that continuously receives user-generated content in the form of comments
  2. Client is switching marketing agencies
  3. Client's old marketing agency is also his current webhost
  4. Client's DNS is hosted by his internet service provider (ISP)
    1. To update DNS records, the client must submit a ticket to the ISP
    2. It can take up to 24 hours for the ticket to be processed and completed.

Due to user-generated content, the client can't keep the website live on both the old web server and the new web server during propagation. A user post to the old web server would be lost.

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Avoid DNS Propagation Delay When Updating DNS

Thu, 11/20/2014 - 14:48 by Chris Burge

DNS propagation can throw a wrench in a website migration or website launch. Clients don't like to hear that their customers may see either the new site or the old site for up to 48 hours during propagation.

This post will discuss two methods for addressing DNS propagation:

  • Reduce TTL Value
  • Route Traffic Through a Reverse Proxy Server
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What is DNS Propagation?

Thu, 11/20/2014 - 10:04 by Chris Burge
You may have heard something like this before when launching or moving a website. "Your customers might see the old site or the new site until DNS propagation is complete, which could take up to 48 hours." To understand why this happens, we first need to discuss DNS.
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Is Your Website Mobile Friendly?

Wed, 10/01/2014 - 10:37 by Chris Burge
Your mobile-unfriendly website could be costing you revenue. Take advantage of responsive web design, native content, responsive images, HTML5 video, and an optimized payload to make your website mobile friendly.
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Remove Return Link on Drupal Webform Ajax Confirmations

Mon, 09/22/2014 - 09:31 by Chris Burge

The 'Go back to the form' link that the Drupal Webform module prints at the bottom of confirmation messages isn't always desirable, especially in the case of forms submitted by ajax using the Webform Ajax module.

Webform Confirmation Return Link

On a recent project, the client desired to remove the 'Go back to the form' link, but only on ajax-enabled forms, something which can be achieved in the theme layer.

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